JP7269283B2 - ERROR TRANSMISSION PREVENTION DEVICE, ERROR TRANSMISSION PREVENTION METHOD, AND PROGRAM - Google Patents

Description

The present invention relates to an erroneous transmission prevention device, an erroneous transmission prevention method, and a program.

As a technology for preventing erroneous transmission of electronic mail (hereinafter also simply referred to as mail), there is known a technology for displaying a confirmation screen for confirming the correctness of the destination address, the correctness of the attached file, etc. before sending the mail. It is For example, Patent Literature 1 discloses a technology that displays a confirmation screen for the sender to confirm the validity of the destination address before sending the email, and does not send the email until the confirmation result on the confirmation screen is obtained. It is

By the way, in recent years, instead of attaching an electronic file (hereinafter also simply referred to as a file) to an email, for example, the file is stored in a storage service and the storage destination URL (Uniform Resource Locator) is included in the email. There is an increasing number of usage methods such as described in Since such a usage method is substantially the same as attaching the file itself to an e-mail, it is considered that the same security risks exist.

JP 2007-87327 A

However, in the conventional technology, in the case of a method of use in which the URL of the storage location is described in the mail, it was not possible to display a confirmation screen for confirming the legitimacy of the file. Therefore, for example, if an erroneous file is stored in a storage service and the storage destination URL is sent by e-mail, a situation substantially similar to erroneous transmission of the file will occur. In addition to e-mail, it is conceivable that the same situation may occur in messaging applications such as instant messengers and chat applications.

An embodiment of the present invention has been made in view of the above points, and an object thereof is to prevent erroneous transmission when transmitting a message including storage destination information of electronic data.

In order to achieve the above object, an erroneous transmission prevention device according to one embodiment provides, when predetermined link information is included in a message to be transmitted, a first display including a name corresponding to a link destination indicated by the link information. a display control unit that performs a first display in which the component is displayed in a display mode that can be changed by an operation on the link destination;

It is possible to prevent erroneous transmission when transmitting a message containing electronic data storage destination information.

It is a figure which shows an example of the functional structure of the mail transmission terminal which concerns on this embodiment. It is a flowchart which shows an example of the mail transmission process which concerns on this embodiment. It is a figure which shows an example of a transmission confirmation screen. 6 is a flowchart showing an example of important information determination processing according to the embodiment; It is a figure which shows an example of an important information confirmation screen. FIG. 12 is a diagram showing an example of functional configurations of a mail transmission terminal and an erroneous mail transmission prevention server according to a modified example;

An embodiment of the present invention will be described below. In this embodiment, a mail transmission terminal 10 capable of preventing erroneous transmission of mail containing a file storage destination URL will be described.

Here, erroneous transmission is mail transmission that is not intended by the sender. For example, cases described in (1) to (3) below correspond to erroneous transmission.

(1) If the mail is sent to the wrong destination (e.g., destination not intended by the sender) (2) Wrong file (e.g., file not intended by the sender, error in content or inappropriate information) (a certain file, etc.) is sent (3) When an email containing an incorrect file storage URL is sent The case (3) of preventing erroneous transmission will be mainly described. In order to prevent the erroneous transmission of (3), the mail transmission terminal 10 according to the present embodiment actually transmits the mail when the operation of transmitting the mail describing the URL of the storage service is performed. A screen (transmission confirmation screen to be described later) for confirming the content of the file stored in the storage destination indicated by the URL is displayed. This makes it possible for the sender of the email (hereinafter also referred to as the user) to confirm the content of the file before sending the email, thereby preventing the sending of an email containing an incorrect file storage destination URL. be able to It should be noted that the erroneous transmission prevention of (1) and (2) is realized by existing technology.

In addition to this, the mail transmitting terminal 10 according to the present embodiment stores important information (for example, personal information, etc.) in a file (mainly, a file stored in the storage location indicated by the above storage location URL). is included, a screen for confirming it (an important information confirmation screen to be described later) is displayed. As a result, it is possible to notify the user that important information is contained in the file before sending the mail. It is possible to confirm.

Although this embodiment will be described for mail, this is just an example, and this embodiment can be similarly applied to messaging applications such as instant messengers and chat applications. In other words, when a messaging application sends a message containing a file storage URL, it is possible to prevent the erroneous transmission described in (3) above, and to notify the user that important information is contained in the file. It is possible to apply in the same way when notifying. Note that an email application (a so-called mailer) for sending and receiving emails can also be considered to be one of messaging applications, so email is also an example of a message.

Files stored in the storage service (and files attached to emails) are mainly assumed to be document files, but are not limited to this. good too.

<Overall Configuration of Mail Sending Terminal 10>
FIG. 1 shows the functional configuration of the mail transmission terminal 10 according to this embodiment. As shown in FIG. 1, the mail transmission terminal 10 according to this embodiment has a mail creation unit 101, an erroneous transmission prevention processing unit 102, and a display control unit 103. FIG. These units are implemented by, for example, one or more programs installed in the mail transmission terminal 10 causing various arithmetic units such as a CPU (Central Processing Unit) to execute processing. For example, the mail creation unit 101 can be implemented by a process that an email application causes a computing device to execute. Further, for example, the erroneous transmission prevention processing unit 102 may be realized by a process that causes an arithmetic device to execute an erroneous transmission prevention application program different from the mail application, or a program that is added or added to the mail application. It may be implemented by a process executed by an arithmetic device. The display control unit 103 may be realized by the process of causing the arithmetic device to execute the above-described erroneous transmission prevention application program, or may be realized by the process of causing the above add-in or add-on program to be executed by the arithmetic device. Alternatively, a program such as a web browser may be implemented by processing executed by a computing device.

Further, the mail transmission terminal 10 according to this embodiment has a setting information storage unit 104 . The setting information storage unit 104 is realized by various storage devices such as HDD (Hard Disk Drive), SSD (Solid State Drive), and flash memory. However, the setting information storage unit 104 may be implemented by a storage device (for example, a database server, etc.) connected to the mail transmission terminal 10 via a communication network.

The mail transmission terminal 10 is various terminals used by the mail sender, and is realized by various computers or computer systems such as PCs (personal computers), smart phones, tablet terminals, wearable devices, and the like.

The email creating unit 101 creates an email (for example, an email describing a file storage destination URL in the storage service 20). Here, the storage service 20 is, for example, a service that rents storage (storage area) in the form of cloud service or the like. The storage service 20 may be provided by an external business operator, or may be provided by an email sender or email receiver (or an organization to which the email sender belongs, an organization to which the email receiver belongs, etc.). may be

The erroneous transmission prevention processing unit 102 generates a screen (transmission confirmation screen, important information confirmation screen, etc.) for preventing erroneous transmission of the email created by the email creation unit 101, and displays the email according to the user's operation. to the mail server 30. Here, the erroneous transmission prevention processing unit 102 includes a URL determination unit 111 , a storage determination unit 112 , an important information determination unit 113 , a screen generation unit 114 and a transmission unit 115 .

The URL determination unit 111 refers to the setting information stored in the setting information storage unit 104 and determines whether or not the email contains a URL.

The storage determination unit 112 refers to the setting information stored in the setting information storage unit 104 to determine whether the URL determined to be included in the mail by the URL determination unit 111 is the URL of the predetermined storage service 20. determine whether or not

The important information determination unit 113 refers to the setting information stored in the setting information storage unit 104 to determine whether the file (particularly, the file stored in the storage service 20) contains important information. judge.

When the storage determination unit 112 determines that the URL of the predetermined storage service 20 is included in the mail, the screen generation unit 114 generates a transmission confirmation screen that notifies the user that the URL is included in the mail. . Further, when the important information determination unit 113 determines that the file contains important information, the screen generation unit 114 generates an important information confirmation screen that notifies the user that the file contains the important information. .

The transmission unit 115 transmits the mail created by the mail creation unit 101 to the mail server 30 when the user performs the mail transmission operation on the transmission confirmation screen. Also, the transmission unit 115 transmits the mail created by the mail creation unit 101 to the mail server 30 even when the transmission confirmation screen is not generated.

The display control unit 103 displays the transmission confirmation screen and the important information confirmation screen generated by the screen generation unit 114 of the erroneous transmission prevention processing unit 102 on the display of the mail transmission terminal 10 . The display control unit 103 also displays various screens other than the transmission confirmation screen and the important information confirmation screen on the display of the mail transmission terminal 10 .

The setting information storage unit 104 stores setting information referred to by the URL determination unit 111 , the storage determination unit 112 and the important information determination unit 113 included in the erroneous transmission prevention processing unit 102 . Here, the setting information includes regular URL information used for determining whether or not a URL is included in the mail, storage URL information for determining whether or not the URL is for a predetermined storage service 20, and and matching information for determining whether or not the file contains important information. The setting information includes one or more storage URL information and one or more matching information.

The regular URL information is information representing an arbitrary URL using a method of expression called a regular expression. For example, the regular URL information is "(([Hh][Tt][Tt][Pp][Ss]{0,1})://)[a-zA-Z0-9\-\._~: /?#\[\]!$&'\(\)*+,;=%^]+" or the like. However, this is just an example of regular URL information, and information expressed in other formats may be used as long as it is information expressing an arbitrary URL using a regular expression.

The storage URL information is information for determining whether or not a certain URL is the URL of a predetermined storage service 20. For example, characteristic character strings and wildcards in the URL of the storage service 20 It is information composed of

For example, if the URL of storage service A is "http://www.storage-a.co.jp", the storage URL information of storage service A is "*storage-a*" using wildcards "*". and the like. This means that if the character string "storage-a" exists in the URL, the URL is determined to be the URL of storage service A.

Also, for example, if the URLs of storage service B are "http://www.storage-b.co.jp" and "http://www.cloud-b.co.jp", the storage of storage service B The URL information can be information expressed as "*storage-a*|*cloud-b*" using a wildcard "*" and a symbol "|" representing a logical sum. This means that if there is a character string "storage-a" or a character string "cloud-b" in the URL, the URL is determined to be the URL of storage service B. .

Matching information is information used when determining whether or not important information is included in a file by pattern matching, and is information composed of keywords, special symbols, and the like, for example.

For example, when determining whether a file contains personal names as important information, matching information consists of surnames such as "Suzuki*", "Sato*", and "Yamada*" and wildcards. information, etc.

Also, for example, when determining whether or not an address is included in a file as important information, as matching information, prefecture names such as "Bunkyo-ku, Tokyo*" and "Yokohama-shi, Kanagawa*" It can be information such as a town/village name and a wild card.

Also, for example, when determining whether or not a phone number is included in a file as important information, matching information includes "03-####-####", "06-####- ####”, etc., and information composed of a symbol “#” representing an arbitrary number.

Note that the above matching information is just an example, and any information can be used as long as it can be determined by pattern matching whether or not predetermined important information is included in the file. In addition, the important information is not limited to personal name, address, and telephone number, but may be, for example, e-mail address, My Number, etc., and other various types of arbitrarily set confidential information (for example, user ID , password, etc.).

<Email sending process>
Mail transmission processing according to the present embodiment will be described with reference to FIG. In this mail transmission process, when the mail is sent and the URL of the predetermined storage service 20 is described in the mail, a transmission confirmation screen is displayed on the display. icon 1101 is displayed). If there are other confirmation items (for example, the addressee, the content of the email text, etc.), a display component for allowing the user to confirm these confirmation items is also displayed in the transmission confirmation screen.

First, the mail creating unit 101 creates an email according to a user's operation (step S101). Here, it is assumed that the user, for example, created a desired email and then performed an operation to send the email. As a result, the mail is sent to the erroneous transmission prevention processing unit 102 .

Next, the URL determination unit 111 of the erroneous transmission prevention processing unit 102 uses the normal URL information included in the setting information stored in the setting information storage unit 104 to add It is determined whether or not a URL is included (step S102). That is, the URL determination unit 111 uses the regular URL information to insert a URL-format character string (that is, a case-insensitive alphanumeric character string of arbitrary length beginning with “http://” in the mail). string) is included. Note that "inside the email" means in the body of the email, but the subject of the email may be included in addition to the body of the email.

If it is determined in step S102 that the mail contains a URL (YES in step S103), the storage determination unit 112 of the erroneous transmission prevention processing unit 102 determines that the setting information stored in the setting information storage unit 104 Using the included storage URL information, it is determined whether or not the URL determined to be included in the mail in step S102 is the URL of the predetermined storage service 20 (step S104). That is, the storage determination unit 112 uses the storage URL information to determine whether or not a storage destination URL that designates a predetermined storage service 20 as a file storage destination is described in the email.

If it is not determined in step S102 that the URL is contained in the mail (NO in step S103), or if it is not determined in step S104 that the URL contained in the mail is the URL of the predetermined storage service 20 If so (NO in step S105), the transmission unit 115 of the erroneous transmission prevention processing unit 102 transmits the email created in step S101 to the mail server 30 (step S106). That is, in this case, the transmission unit 115 of the erroneous transmission prevention processing unit 102 transmits the email to the mail server 30 without displaying the transmission confirmation screen. By sending the mail to the mail server 30, the mail is sent to the recipient. However, if there are confirmation items other than the URL of the predetermined storage service 20, a transmission confirmation screen including display parts for allowing the user to confirm those confirmation items may be displayed. At this time, a display part indicating that the URL of the predetermined storage service 20 is not included in the mail is displayed separately from display parts for allowing the user to confirm other confirmation items, and the predetermined storage service is displayed. The mail may be automatically transmitted only when all the confirmation items including the confirmation item of whether or not the 20 URLs are included in the mail satisfy the predetermined transmission criteria.

On the other hand, if it is determined in step S104 that the URL contained in the mail is the URL of the predetermined storage service 20 (YES in step S105), the screen generation unit 114 of the erroneous transmission prevention processing unit 102 generates a predetermined A transmission confirmation screen for notifying at least that the URL of the storage service 20 is included in the mail is generated (step S107).

Then, the display control unit 103 causes the transmission confirmation screen generated in step S107 to be displayed on the display (step S108). As a result, it is possible to notify the user that the storage destination URL for storing the file in the predetermined storage service 20 is described in the email before sending the email. Therefore, reconfirmation of the content of the file is prompted, and erroneous transmission can be prevented.

≪Send confirmation screen≫
FIG. 3 shows an example of the transmission confirmation screen displayed in step S107. In the transmission confirmation screen 1000 shown in FIG. 3, in the above step S101, the subject is "Quotation", the text is the storage destination URL of storage service A, and "Quotation.pdf" and "Schedule.xlsx" are written. is an example in the case of creating an e-mail with .

Icons 1101 to 1103 are displayed in the attached file display field 1100 of the transmission confirmation screen 1000 shown in FIG. An icon 1101 is a display component that indicates that the URL for storage service A is described in the mail. An icon 1102 is a display part indicating that "estimate.pdf" is attached, and an icon 1103 is a display part indicating that "schedule.xlsx" is attached. As a result, it is possible to notify the user that, in addition to the fact that the attached file is attached, the mail contains a storage destination URL that designates the predetermined storage service 20 as the file storage destination.

At this time, for example, when the icon 1101 is selected by the user, important information determination processing, which will be described later, is executed, and the storage destination URL of the storage service 20 (storage service A in the example shown in FIG. 3) corresponding to the icon 1101 is changed. It is determined whether important information is included in the file stored in the indicated storage destination. The details of this important information determination process will be described later. Similarly, for example, when the icon 1102 is selected by the user, it is determined whether or not important information is included in "estimate.pdf". contains important information.

Note that when the icon 1101 is selected, the file may be downloaded from the storage destination URL of the storage service 20 corresponding to the icon 1101 without executing the important information determination process, and the contents of the file may be displayed. Similarly, when the icon 1102 is selected, the contents of "estimate.pdf" may be displayed, and when the icon 1103 is selected, the contents of "schedule.xlsx" may be displayed.

The transmission confirmation screen 1000 shown in FIG. 3 also includes a subject display field 1200 , an address display field 1300 and a text display field 1400 .

In the subject name display field 1200, the subject name of the mail created in step S101 is displayed, "Quotation Matter".

The destination display field 1300 displays the e-mail address set as the destination of the e-mail created in step S101. The example shown in FIG. 3 shows a case where "usere1@expop1.abc.gr.jp" is set as the destination mail address. At this time, the icon 1301 displays the domain "abc.gr.jp" of the destination mail address, and the icon 1302 displays the destination mail address. Also, the icon 1301 is displayed in different display modes depending on whether or not the domain has been transmitted in the past. Similarly, the icon 1302 is displayed in different display modes depending on whether or not the email address has been sent to in the past. In the example shown in FIG. 3, while the domain "abc.gr.jp" is a domain that has been sent in the past, it has never been sent to "usere1" of the domain "abc.gr.jp" This is an example of the case.

The body text display field 1400 displays the body text of the mail created in step S101. It should be noted that the user may be able to edit (add, delete, etc.) the contents of the mail body in this body display field 1400 .

The transmission confirmation screen 1000 shown in FIG. 3 includes a transmission button 1500 and a transmission stop button 1600. When the user selects the transmission button 1500, the mail created in step S101 is actually transmitted. . That is, when the user selects the send button 1500 , the transmission unit 115 of the erroneous transmission prevention processing unit 102 transmits the mail to the mail server 30 . On the other hand, the user can stop sending the mail by selecting the send stop button 1600 .

It should be noted that the transmission confirmation screen 1000 shown in FIG. 3 is only an example, and in addition to the respective display components shown, confirmation items including, for example, whether or not the URL of the predetermined storage service 20 is included in the mail. (that is, the above-described processing of steps S102 to S105, existing erroneous transmission prevention processing, etc.) may be included. Further, the judgment processing of each check item is automatically executed when, for example, the subject, destination, mail text, and attached files (including files stored in the storage destination URL of the storage service 20) are changed. may

Each display part (icon 1101 to icon 1103 of attached file display field 1100, subject display field 1200, destination display field 1300, text display field 1400, etc.) in transmission confirmation screen 1000 shown in FIG. The display mode may be changed when the confirmation item is confirmed. It should be noted that the change of the display mode may include not only changing the color, etc., but also displaying a check mark in a character string or a check box.

For example, when "estimate.pdf" is opened, the display mode of the icon 1102 is changed to indicate that it has been confirmed (for example, the color is changed to green, etc., and the character string "confirmed" is displayed). etc.). Similarly, when "Schedule.xlsx" is opened, the display mode of the icon 1103 may be changed to indicate that it has been confirmed. Similarly, for example, when a file stored in the storage destination URL of storage service A is opened (or downloaded and opened), the display mode of the icon 1101 may be changed to indicate that it has been confirmed. good.

<Important Information Judgment Processing>
The important information determination process according to this embodiment will be described with reference to FIG. In this important information determination process, if the file contains important information, an important information confirmation screen is displayed on the display. In the following, as an example, it is assumed that the user has selected the icon 1101 on the transmission confirmation screen 1000 shown in FIG.

First, the important information determination unit 113 of the erroneous transmission prevention processing unit 102 stores the icon 1101 selected by the user in the storage destination indicated by the storage destination URL of the storage service 20 (storage service A in the example shown in FIG. 3). file is obtained (step S201). Here, the important information determination unit 113 may acquire the file by automatically downloading the file from the storage destination URL, or acquire the file downloaded by the user's operation from the storage destination URL. may When a file is downloaded by a user's operation, for example, a file download screen for storage service A is displayed by the display control unit 103 in accordance with the selection of the icon 1101, and the user performs a file download operation on this file download screen. done.

Next, the important information determination unit 113 of the erroneous transmission prevention processing unit 102 uses the matching information included in the setting information stored in the setting information storage unit 104 to store the important information in the file acquired in step S201. It is determined whether information is included (step S202). That is, the important information determination unit 113 performs pattern matching on the file using the matching information to determine whether or not the important information corresponding to the matching information is included.

If it is determined in step S202 that the file does not contain important information (NO in step S203), the erroneous transmission prevention processing unit 102 terminates the important information determination process.

On the other hand, if it is determined in step S202 that the file contains important information (YES in step S203), the screen generation unit 114 of the erroneous transmission prevention processing unit 102 determines that the file contains important information. An important information confirmation screen for notifying that the

Then, the display control unit 103 causes the important information confirmation screen generated in step S204 to be displayed on the display (step S205). Thereby, the user can be notified that important information is included in the file (particularly, the file stored in the predetermined storage service 20) before sending the mail. Therefore, reconfirmation of the contents of the file is prompted, and leakage of important information such as personal information can be prevented.

Note that the important information determination process shown in FIG. 4 determines whether or not a file stored in a predetermined storage service 20 contains important information. For example, in the example shown in FIG. 3, it may be determined whether important information is included in "estimate.pdf" and "schedule.xlsx"). If it is determined whether or not the file attached to the email contains important information, there is no need to execute step S201 above. is included or not.

≪Important information confirmation screen≫
FIG. 5 shows an example of the important information confirmation screen displayed in step S205. The important information confirmation screen 2000 shown in FIG. 5 is an example when it is determined in step S202 that the telephone number, password, and three personal names are included.

Icons 2101 to 2103 are displayed in the important information display field 2100 of the important information confirmation screen 2000 shown in FIG. An icon 2101 is a display component indicating that the file contains a telephone number, an icon 2102 is a display component indicating that the file contains a password, and an icon 2103 is a display component indicating that the file contains three personal names. It is a display component that indicates that one is included. Thereby, the user can be notified that the file contains important information.

At this time, for example, when the icon 2101 is selected by the user, the telephone numbers included in the file may be displayed. Similarly, a password may be displayed when icon 2102 is selected by the user, and three personal names may be displayed when icon 2103 is selected. However, for example, confidential information such as a password may not be displayed, or may be displayed in a masked state.

Further, when the user selects the OK button 2200, the display control unit 103 hides the important information confirmation screen 2000. FIG.

Note that the important information confirmation screen 2000 shown in FIG. 5 may be displayed separately from the transmission confirmation screen, for example, as a pop-up screen or the like, or may be displayed as part of the transmission confirmation screen.

<Modification>
Modifications of this embodiment will be described below.

<<Modification 1>>
In the present embodiment, the mail sending terminal 10 has the mail creation unit 101, the erroneous transmission prevention processing unit 102, the display control unit 103, and the setting information storage unit 104, but the erroneous transmission prevention processing unit 102 and The setting information storage unit 104 may be included in a server located between the mail transmission terminal 10 and the mail server 30 . That is, as shown in FIG. 6, an erroneous transmission prevention server 40 exists between the mail transmission terminal 10 and the mail server 30, and the erroneous transmission prevention server 40 operates the erroneous transmission prevention processing unit 102 and the setting information storage unit 104. may have. This eliminates the need to install a program for implementing the erroneous transmission prevention processing unit 102 in the mail transmission terminal 10, which is effective, for example, when the number of mail transmission terminals 10 is large.

<<Modification 2>>
Although the mail transmitting terminal 10 has the mail creating unit 101 in the above modified example 1, the mail transmitting terminal 10 does not necessarily have the mail creating unit 101 . For example, when the mail creating unit 101 is realized by Web mail, the mail transmitting terminal 10 only needs to have a Web browser, and does not need to have the mail creating unit 101 . In this case, the server that provides Web mail has the mail creation unit 101 .

<<Modification 3>>
In step S102 of FIG. 2, it is determined whether or not the URL is included in the mail. However, for example, it may be determined whether or not the URL is included in the attached file of the mail. As a result, even if the storage destination URL of the file stored in the predetermined storage service 20 is described in the attached file, the transmission confirmation screen can be displayed in step S108 of FIG. Become.

In addition, when the user replies to the received mail, the reply mail may include a quoted sentence (for example, a sentence prefixed with a symbol “>”). In this case, even if the URL is included in the mail, if the URL is included in the quotation, it may be determined in step S102 of FIG. 2 that the URL is not included in the mail. In a series of determinations from step S102 to step S104, each determination unit stores the regular URL information and the URL of the predetermined storage service 20 so that the determination can be performed without referring to the setting information stored in the setting information storage unit 104. , information on determination conditions such as whether or not to exclude the inside of the quotation may be provided.

<<Modification 4>>
In this embodiment, it is assumed that the user stores (uploads) the file in the storage service 20 in advance, but the mail transmission terminal 10 may perform this upload. For example, when an e-mail with an attached file is created in step S101 of FIG. 2, the e-mail sending terminal 10 automatically stores (uploads) this attached file in the storage service 20, and the storage destination URL is automatically added to the body of the e-mail. can be described as As a result, the user can create and send an email containing a storage destination URL simply by creating an email with an attached file without uploading the file in advance. Note that the upload destination storage service 20 and its account information (for example, user ID and password) must be registered in the mail transmission terminal 10 in advance.

At this time, before uploading the file to the storage service 20, the important information determination unit 113 of the erroneous transmission prevention processing unit 102 may determine whether or not the file contains important information. Then, when important information is included in the file to be uploaded, the important information confirmation screen may be displayed and the upload of the file may be stopped. As a result, when automatically uploading a file attached to an email to the storage service 20, uploading of a file containing important information can be prevented.

<<Modification 5>>
Icons 1101 to 1103 are displayed in the attached file display field 1100 of the transmission confirmation screen 1000 shown in FIG. good.

For example, a score may be calculated for files (attached files or files stored in the storage service 20) corresponding to each icon, and the scores may be displayed in descending order from the top.

At this time, the score may be a value that is calculated or determined according to the importance of the file corresponding to the icon, the level of security risk at the time of erroneous transmission, and the like. For example, it is conceivable to calculate the score according to the important information included in the file corresponding to the icon. Specifically, for example, the type of important information is i (1≦i≦I, where I is the number of types), the weight of important information of type i is w _i , and the number of important information of type i contained in the file is n As _i , the score of the file can be calculated as w ₁ n ₁ + . . . + w _I n _I. In addition to this, the score may be calculated in consideration of information such as the nature of the file (for example, whether it is confidential or not). As a result, a score is calculated according to the type and number of important information contained in the file, the nature of the file, etc., and icons corresponding to each file are displayed in descending order of the score.

Also, the display mode of each icon may be changed according to the above score. For example, icons corresponding to files with scores above a predetermined threshold may be highlighted by changing color or blinking.

Furthermore, when changing the display order or changing the display mode, the type of file corresponding to the icon and the storage service 20 in which the file is stored may be considered. For example, if there is a rule to "send the quotation as a PDF file", if the quotation is not a PDF file, the icon corresponding to that file will be displayed in a higher order or highlighted. may Also, for example, if there is a rule that "when transmitting a storage destination URL to a specific destination, store the file in a specific storage service 20 and describe the storage destination URL", the file The display order of the corresponding icon may be set higher, or the icon may be highlighted. Note that the file type can be identified from a character string, file name, or the like described in the file.

In this way, if there are some rules or conventions that conform to the rules when sending files (attached files, storage destination URLs), if the rules or conventions are not followed, the icon corresponding to the file will be displayed. may be displayed in a higher order or may be highlighted.

<<Modification 6>>
A check box or the like is provided for each display component (icon 1101 to icon 1103 in attached file display column 1100, subject display column 1200, address display column 1300, text display column 1400, etc.) in transmission confirmation screen 1000 shown in FIG. For example, the send button 1500 may not be pressed when all check boxes are unchecked. Further, for example, if the attached file (including the file stored in the storage destination URL of the storage service 20) has not been confirmed, the check box may not be checked, or the send button 1500 may be pressed. You can make it impossible. Furthermore, for example, if the transmission confirmation screen 1000 includes a button or the like for executing determination processing for each confirmation item including whether or not the URL of the storage service 20 is included in the email, The button may not be pressed when all check boxes are unchecked (or the attached file is not confirmed).

The present invention is not limited to the specifically disclosed embodiments described above, and various variations, modifications, combinations with known techniques, etc. are possible without departing from the scope of the claims. be.

10 mail transmission terminal 20 storage service 30 mail server 101 mail creation unit 102 erroneous transmission prevention processing unit 103 display control unit 104 setting information storage unit 111 URL determination unit 112 storage determination unit 113 important information determination unit 114 screen generation unit 115 transmission unit

Claims (10)

When predetermined link information is included in a message to be transmitted, a first display component including a name corresponding to a link destination indicated by the link information is displayed in a display mode that can be changed by operating the link destination. A display control unit that displays 1,
erroneous transmission prevention device. a first determination unit that determines whether or not the message contains link information of a predetermined storage service;
The display control unit
2. The erroneous transmission prevention device according to claim 1, wherein said first display is performed when said link information is determined to be included. The first determination unit is
3. The error according to claim 2, wherein even if the link information is included in the message, it is determined that the link information is not included when the link information is included in a quoted message. Transmission prevention device. a second determination unit that determines whether predetermined important information is included in the electronic data stored at the link destination indicated by the link information;
The display control unit
2. or, when it is determined that the important information is included in the electronic data, a second display is performed to display a second display component indicating that the important information is included in the electronic data. 3. The erroneous transmission prevention device according to 3. The second determination unit
5. The erroneous transmission prevention device according to claim 4, further determining whether or not the electronic data attached to the message includes the important information. The display control unit
5. The display order and display mode of the first display parts corresponding to the electronic data are changed according to the score calculated for the electronic data stored at the link destination indicated by the link information. Mistransmission prevention device described in . The display control unit
6. The erroneous transmission according to claim 5, wherein the display order and display mode of the third display component corresponding to the electronic data is changed according to the score calculated for the electronic data attached to the message. prevention device. 8. The erroneous transmission prevention device according to claim 6, wherein said score is calculated according to the type and number of said important information included in said electronic data, or the type of said electronic data. When predetermined link information is included in a message to be transmitted, a first display component including a name corresponding to a link destination indicated by the link information is displayed in a display mode that can be changed by operating the link destination. Display control procedure for displaying 1,
A computer-implemented anti-misdelivery method. A program that causes a computer to function as the erroneous transmission prevention device according to any one of claims 1 to 8.

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