JP7709308B2 - Information processing device, information processing method, and information processing program - Google Patents

Description

The present invention relates to an information processing device, an information processing method, and an information processing program.

In recent years, online shopping and social networking services (SNS) have become widely used. As a result, there are an increasing number of opportunities to enter personal information on web pages and to post information using bulletin boards and SNS. This has led to problems such as the leakage of personal information due to the entry of personal information on unauthorized web pages and the posting of information that slanders others on SNS.

Patent Document 1 describes an input method in which an input operation corresponds to the identification information of an application for which an input operation has been detected, and at least a part of user information stored in an information storage unit that stores application identification information and user information in association with each other, is input into an editable area in which an input operation has been detected. Patent Document 2 describes a mobile phone that displays a warning if an input character string contains harmful words that have been stored in advance in memory. Patent Document 3 describes an information terminal that monitors whether or not information to be transmitted contains preset monitoring information, and transmits information according to the monitoring results.

JP 2014-075096 A JP 2005-092305 A JP 2007-108921 A

Technology is being used that stores the Uniform Resource Locators (URLs) of fraudulent web pages in a blacklist and displays a warning if the URL of a web page displayed on the screen is stored in the blacklist. However, if the user closes the displayed warning and continues viewing the web page, subsequent operations may result in damage such as the installation of malware or the theft of personal information.

One aspect of the disclosed technology is to provide a technology that can alert a user to a screen that has already been displayed.

One aspect of the disclosed technology is exemplified by an information processing device as follows. The information processing device includes a display unit, a memory unit that stores specific information that identifies a web page classified into a predetermined group, and a conversion unit that converts characters entered into a character input field into another type of character. When a character input field is specified on a screen displayed on the display unit, the conversion unit identifies the program that caused the screen including the character input field to be displayed on the display unit, and if the identified program is a web browser, acquires specific information of the screen output by the web browser, and displays a warning on the display unit depending on whether the acquired specific information is stored in the memory unit.

According to the disclosed technology, it is possible to alert the user to a screen that has already been displayed.

FIG. 1 is a diagram illustrating an example of the appearance of a smartphone according to an embodiment. FIG. 2 is a diagram illustrating an example of a hardware configuration of the smartphone according to the embodiment. FIG. 3 is a diagram illustrating an example of a processing block of the smartphone according to the embodiment. FIG. 5 is a first diagram showing an example of a warning display when a web page is displayed by a web browser. FIG. 5 is a second diagram showing an example of a warning display when a web page is displayed by a web browser. FIG. 6 is a diagram showing an example of a chat using an SNS application. FIG. 7 is a first diagram illustrating an example of a processing flow of the smartphone according to the embodiment. FIG. 8 is a second diagram illustrating an example of a processing flow of the smartphone according to the embodiment. FIG. 9 is a third diagram illustrating an example of a processing flow of the smartphone according to the embodiment.

<Embodiment>
The configurations of the embodiments shown below are examples, and the disclosed technology is not limited to the configurations of the embodiments. An information processing device according to an embodiment includes, for example, the following configuration. The information processing device includes a display unit, a storage unit that stores specific information that identifies a web page classified into a predetermined group, and a conversion unit that converts characters entered in a character input field into other types of characters. When a character input field is specified from among the screens displayed on the display unit, the conversion unit identifies a program that has caused the screen including the character input field to be displayed on the display unit, and if the identified program is a web browser, acquires specific information of the screen output by the web browser, and causes the display unit to display a warning depending on whether the acquired specific information is stored in the storage unit.

In this information processing device, if the program that displays the screen including the specified character input field is a web browser, a warning can be displayed on the display unit depending on whether specific information of the screen output by the web browser is stored in the storage unit. Therefore, the information processing device can alert the user to a character input operation on a screen that has already been displayed. Examples of specific information include the URL of the web page and the IP address of the server that publishes the web page.

Below, an embodiment in which the above-mentioned information processing device is applied to a smartphone will be further described with reference to the drawings. FIG. 1 is a diagram showing an example of the appearance of a smartphone 100 according to an embodiment. FIG. 1 illustrates an example of the appearance of the smartphone 100 as seen from one side (assuming the appearance from the front side). The smartphone 100 has a plate-shaped housing 110. It is assumed that the upper side of the paper in FIG. 1 is the upper side of the housing 110, and the lower side of the paper is the lower side of the housing 110.

The smartphone 100 is a portable information processing device. A speaker 111, a microphone 112, a display 113, and a touch panel 114 are provided on the front surface of a housing 110. The touch panel 114 is provided so as to overlap the display 113. It is preferable that the touch panel 114 is provided so as to cover the entire surface of the display 113. The speaker 111 is provided, for example, at the upper center in the X direction of the display 113. The microphone 112 is provided, for example, at the lower center in the X direction of the display 113.

Figure 2 is a diagram showing an example of the hardware configuration of a smartphone 100 according to an embodiment. The smartphone 100 includes a system-on-a-chip (SoC) 101, a static random access memory (SRAM) 102, a flash memory 103, a speaker 111, a microphone 112, a display 113, and a touch panel 114. The SoC 101, the SRAM 102, the flash memory 103, the speaker 111, the microphone 112, the display 113, and the touch panel 114 are interconnected by a connection bus.

SoC101 is exemplified by, for example, a combination of a processor and an integrated circuit. SoC101 includes an application processor 1011, a memory 1012, a secure memory 1013, and a communication control processor 1014.

The application processor 1011 deploys programs stored in the SRAM 102 or the flash memory 103 in the working area of the memory 1012, and controls peripheral devices through the execution of the programs. This enables the smartphone 100 to execute processes that meet a specific purpose.

Memory 1012 is exemplified as a storage unit that is directly accessed by application processor 1011. Memory 1012 includes Random Access Memory (RAM) and Read Only Memory (ROM).

Secure memory 1013 is a storage unit to which access is restricted by a private key. Processes that can use the private key used to access secure memory 1013 are limited to processes in the Operating System (OS) layer. In other words, access to secure memory 1013 from processes running in the application layer is prohibited. Secure memory 1013 is an example of a "storage unit."

The communication control processor 1014 deploys the communication interface program stored in the SRAM 102 or the flash memory 103 in the working area of the memory 1012, and controls communications with external devices on the computer network through the execution of the communication control program.

The SRAM 102 and the flash memory 103 are non-volatile storage units. Various programs and data are stored in the SRAM 102 and the flash memory 103 in a readable and writable manner. The SRAM 102 and the flash memory 103 store an operating system (OS), various programs, various tables, etc. The OS includes, for example, the communication interface program described above.

The speaker 111 is a sound source that outputs sound. The speaker 111 outputs sounds such as the voice of the other party during a call using the smartphone 100. The microphone 112 is a microphone used to capture audio during calls and videos.

The display 113 displays data processed by the application processor 1011 and data stored in the main memory unit 102. The display 113 is, for example, a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), an Electroluminescence (EL) panel, or an organic EL panel. The display 113 is an example of a "display unit."

The touch panel 114 detects a touch operation by a user's finger or the like.
There is no limitation on the method by which the touch panel 114 detects a touch operation. Examples of the method by which the touch panel 114 detects a touch operation include a capacitance method, a resistive film method, and a surface acoustic wave method. The smartphone 100 can provide the user with an intuitive operating environment by providing the touch panel 114 superimposed on the display 113.

<Processing blocks of the smartphone 100>
Fig. 3 is a diagram showing an example of a processing block of the smartphone 100 according to the embodiment. Fig. 3 also shows an information server 500. The smartphone 100 includes a web browser 201, a Social Networking Service (SNS) application 202, a character input unit 11, a character conversion unit 12, a blacklist 13, a whitelist 14, and a prohibited phrase list 15. The smartphone 100 executes processes as each unit of the smartphone 100, such as the web browser 201, the SNS application 202, the character input unit 11, the character conversion unit 12, the blacklist 13, the whitelist 14, and the prohibited phrase list 15, by the application processor 1011 executing a computer program.

The web browser 201 and the SNS app 202 are application programs executed in the application layer 200. The application layer 200 is a layer where various application programs (web browser, dictionary, games, etc.) installed in the OS of the smartphone 100 run. The web browser 201, for example, connects to a web server indicated by a specified URL and displays a web page on the character input unit 113. The web browser 201 also transmits a character string entered in a character input field of the input web page to the web server. The SNS app 202 is, for example, an application program that transmits and receives messages between users registered in the SNS service. The SNS app 202 transmits a message to one or more other users. The SNS app 202 is an example of a "message sending program".

The blacklist 13, the whitelist 14, and the prohibited phrase list 15 are arranged on the secure memory 1013. The blacklist 13 stores a list of URLs of fraudulent web pages (for example, web pages that install malware on the smartphone 100 or extract personal information from the smartphone 100). The whitelist 14 stores a list of URLs of web pages that have been confirmed to be safe for the smartphone 100. The prohibited phrase list 15 stores a list of words that are determined not to be sent to others. Examples of words stored in the prohibited phrase list 15 include words that are offensive to others, words that insult others, and discriminatory words. The URLs stored in the blacklist 13 are an example of "specific information of a web page classified into the first group". The URLs stored in the whitelist 14 are an example of "specific information of a web page classified into the second group". The URLs are an example of "specific information". The prohibited phrase list 15 is an example of a "list of words".

The character input unit 11 and the character conversion unit 12 are processes executed in the OS layer 300. The OS layer 300 is a layer in which various programs (kernel, device driver, library, framework, etc.) included in the OS of the smartphone 100 run. It can be said that the processes executed in the OS layer 300 are included in the OS installed in the smartphone 100. The character input unit 11 inputs a character string specified by the touch panel 114 into a character input field of a web page displayed in the web browser 201 or an SNS application 202. The character conversion unit 12 converts a character string containing one or more input characters into another type of character string. The character conversion unit 12 converts, for example, a character string input in hiragana into a character string in kanji. The character input unit 11 and the character conversion unit 12 are also called, for example, a Front-End Processor (FEP) or an Input Method Editor (IME). The character conversion unit 12 is an example of a "conversion unit."

The character conversion unit 12 updates the blacklist 13 and the whitelist 14. The information server 500 acquires the URLs of fraudulent web pages and the URLs of web pages that are safe to access from public institutions and the like at any time, and stores the acquired URLs. Therefore, the character conversion unit 12 acquires a list of fraudulent web pages from the information server 500 at any time, and updates the blacklist 13. The character conversion unit 12 also acquires the URLs of web pages that are safe to access from the information server 500 at any time, and updates the whitelist 14.

The character conversion unit 12 further identifies the application program that displayed the screen including the specified character input field. For example, when the character conversion unit 12 identifies that the application program that displayed the screen including the specified character input field is the web browser 201, it acquires the URL of the web page displayed by the web browser 201. The character conversion unit 12 then determines whether the acquired URL is included in the blacklist 13 or the whitelist 14. The character conversion unit 12 displays a warning on the display 113 depending on the determination result.

Figures 4 and 5 are diagrams showing an example of a warning display when a web page is displayed by the web browser 201. Figures 4 and 5 show an example of a case where a web page including a login ID input field 1131 and a password input field 1132 is displayed on the display 113.

Figure 4 shows an example of a warning that is displayed when the acquired URL is included in the blacklist 13. When a password input field 1132 is specified by a touch operation with a finger F (Figure 4 (A)), the character conversion unit 12 identifies the application program that has output the screen including the specified password input field 1132. Here, the character conversion unit 12 identifies the web browser 201 as the application program that has output the screen.

Since the identified application program is the web browser 201, the character conversion unit 12 obtains from the web browser 201 the URL of the web page displayed by the web browser 201. The character conversion unit 12 determines whether the obtained URL is included in the blacklist 13. If the obtained URL is included in the blacklist 13, the character conversion unit 12 can determine that the web page displayed by the web browser 201 is an unauthorized web page. Therefore, the character conversion unit 12 displays a strong warning message 121 notifying that there is a risk of personal information being stolen, etc. ((B) of FIG. 4). The strong warning message 121 is an example of a "first warning".

Figure 5 shows an example of a warning displayed when the acquired URL is not included in either the blacklist 13 or the whitelist 14. For example, when the acquired URL is not included in either the blacklist 13 or the whitelist 14, the character conversion unit 12 has not confirmed that the web page displayed by the web browser 201 is an unauthorized web page, but has not confirmed that it is a safe web page either. Therefore, the character conversion unit 12 displays a weak warning message 122 that calls attention to the input of personal information. The weak warning message 122 is an example of a "second warning." A "trusted site" button 1221 can be placed on the weak warning message 122, and pressing the "trusted site" button 1221 allows the URL of the web page to be registered in the whitelist 14 as a safe web page.

The strong warning message 121 and the weak warning message 122 may be displayed so as to overlap with an input field (e.g., a login ID input field 1131 or a password input field 1132) designated when inputting characters.
Since the warning message 32 is likely to be visible to a user who is inputting login information such as a login ID and a password, the strong warning message 121 and the weak warning message 122 can be made more appealing to the user.

In addition, even if the application program that displayed the screen including the specified character input field is the web browser 201, if the specified character input field is not the password input field 1132, the character conversion unit 12 may display a warning message on the display 113 depending on the presence or absence of prohibited words for the SNS app 202 described below.

For example, when the character conversion unit 12 identifies that the application program that has displayed the screen including the specified character input field is the SNS app 202, it monitors the character string input by a touch operation or the like. That is, the character conversion unit 12 determines whether or not the input character string includes a word stored in the prohibited word list 15. Then, when the input character string includes a word stored in the prohibited word list 15, the character conversion unit 12 displays a warning on the display 113.

Fig. 6 is a diagram showing an example of a chat using the SNS application 202. The SNS application 202 displays messages exchanged in previous chats as speech bubbles 2022 in the chat area 2021. The SNS application 202 then accepts input of a new message in a new message input field 2023 using a screen keyboard 2024. The character conversion unit 12 determines whether the message input in the new message input field 2023 contains a word stored in the prohibited word list 15 ((A) of Fig. 6).

When the message "Die" entered in the new message input field 2023 contains a word stored in the prohibited word list 15, the character conversion unit 12 displays a prohibited word warning message 123 on the display 113 (FIG. 6B). The prohibited word warning message 123 may be arranged so as to overlap, for example, the screen keyboard 2024 or the chat area 2021. Since the screen keyboard 2024 and the chat area 2021 are considered to be easily visible to a user entering a new message, the appeal of the prohibited word warning message 123 to the user can be enhanced.

<Processing flow of the smartphone 100>
7 to 9 are diagrams showing an example of a processing flow of the smartphone 100 according to the embodiment. Hereinafter, an example of a processing flow of the smartphone 100 according to the embodiment will be described with reference to FIGS.

First, referring to FIG. 7, a process in which the character conversion unit 12 of the smartphone 100 identifies the launched application program will be described. At T1, the character conversion unit 12 determines whether or not a character input field has been specified. Examples of character input fields include the login ID input field 1131, password input field 1132, and new message input field 2023 described above. When the character conversion unit 12 specifies a character input field (YES at T1), the process proceeds to T2. When a character input field has not been specified (NO at T1), the process of T1 is repeated.

At T2, the character conversion unit 12 identifies the application program that displays the screen including the character input field specified at T1. For example, the Application Programming Interface (API) of the OS can be used to identify the application program. If the identified application program is the web browser 201 ("Web Browser" at T3), the process proceeds to T4. If the identified application program is the SNS application 202 ("SNS Application" at T3), the process proceeds to T5.

At T4, the character conversion unit 12 performs processing on the web browser 201. Details of the processing will be described later with reference to FIG. 8. At T5, the character conversion unit 12 performs processing on the SNS app 202. Details of the processing will be described later with reference to FIG. 9.

Next, referring to FIG. 8, the processing of the character conversion unit 12 on the web browser 201 will be described. In T41, the character conversion unit 12 determines whether the character input field specified in T1 of FIG. 7 is the password input field 1132. Whether it is the password input field 1132 can be determined, for example, by using an API of the OS and checking whether "password" is specified as an attribute in the character input field. If it is the password input field 1132 (YES in T41), processing proceeds to T42. If it is not the password input field 1132 (NO in T41), processing proceeds to T47.

At T42, the character conversion unit 12 obtains the URL of the web page being displayed by the web browser 201. At T43, the character conversion unit 12 determines whether or not the URL obtained at T42 is stored in the blacklist 13. If the URL obtained at T42 is stored in the blacklist 13 (YES at T43), the process proceeds to T44. If the URL obtained at T42 is not stored in the blacklist 13 (NO at T43), the process proceeds to T45. At T44, the character conversion unit 12 displays a strong warning message 121 on the display 113.

At T45, the character conversion unit 12 determines whether or not the URL obtained at T42 is stored in the whitelist 14. If the URL obtained at T42 is stored in the whitelist 14 (YES at T45), the processing ends. If the URL obtained at T42 is not stored in the whitelist 14 (NO at T45), the processing proceeds to T46. At T46, the character conversion unit 12 displays a weak warning message 122 on the display 113.

Next, referring to FIG. 9, the processing of the character conversion unit 12 on the SNS application 202 will be described. At T51, the character conversion unit 12 accepts input of a character string via the screen keyboard 2024. At T52, the character conversion unit 12 determines whether or not an operation to confirm the input of the character string has been performed. If the input of the character string has been confirmed (YES at T52), the processing proceeds to T53. If the input of the character string has not been confirmed (NO at T52), the processing proceeds to T51.

In T53, the character conversion unit 12 determines whether the character string confirmed in T52 includes a phrase stored in the prohibited phrase list 15. If the character string includes a phrase stored in the prohibited phrase list 15 (YES in T53), the process proceeds to T54. If the character string does not include a phrase stored in the prohibited phrase list 15 (NO in T53), the process ends.

At T54, the character conversion unit 12 displays a prohibited phrase warning message 123 on the display 113.

<Effects of the embodiment>
In this embodiment, when a character input field such as the login ID input field 1131, the password input field 1132, or the new message input field 2023 is specified, the character conversion unit 12 identifies an application program that has displayed a screen including the character input field. If the identified application program is the web browser 201 and the password input field, the character conversion unit 12 acquires the URL of the displayed screen (web page) and displays a warning depending on whether the acquired URL is stored in the black list 13 or the white list 14. If the identified application program is the SNS application 202, the character conversion unit 12 displays a warning depending on whether the confirmed character string includes a word stored in the prohibited word list 15. That is, according to this embodiment, even when the screen is already displayed, the warning is displayed at the character input stage, so that leakage of personal information, transmission of words that should not be sent to others, and access to unauthorized web pages can be prevented.

Furthermore, according to this embodiment, the warning can be displayed closer to the time of character input or transmission than when the warning is displayed immediately after the screen is displayed by the application program. Furthermore, in this embodiment, the displayed warning is positioned so as to overlap with the character input field or in the vicinity of the character input field, as exemplified in Figures 4, 5, and 6. Therefore, the smartphone 100 can make the user strongly aware that a warning display has been issued in response to a character input or transmission operation. In other words, the smartphone 100 can make it easy for the user to recognize which operation the warning is for.

In this embodiment, even if the identified application program is the web browser 201, if the specified character input field is not the password input field 1132, the prohibited phrase list 15 is referenced to monitor the character string to be input. If the input confirmed character string contains a phrase stored in the prohibited phrase list 15, the character conversion unit 12 displays a prohibited phrase warning message 123 on the display 113. Through this processing, even if a bulletin board, SNS, etc. is displayed by the web browser 201, the smartphone 100 can prevent words that should not be sent to others from being sent to the bulletin board, SNS, etc.

In this embodiment, the blacklist 13, the whitelist 14, and the prohibited phrase list 15 are placed in the secure memory 1013 of the SoC 101. As described above, application programs placed in the application layer 200 cannot access data in the secure memory 1013. Therefore, even if, for example, a vulnerability in an application program placed in the application layer 200 is attacked, it is possible to prevent the blacklist 13, the whitelist 14, and the prohibited phrase list 15 from being rewritten or deleted against the user's will.

In this embodiment, the character conversion unit 12 updates the blacklist 13 and the whitelist 14 based on information acquired from the information server 500. Therefore, according to this embodiment, even when a fraudulent webpage or a webpage that has been confirmed to be safe is newly found, the smartphone 100 can respond using the updated blacklist 13 and whitelist 14.

<Modification>
In the embodiment described above, when the specified application program is the web browser 201, the character conversion unit 12 determines whether the specified character input field is the password input field 1132 (T41 in FIG. 8), and when the specified character input field is not the password input field, determines whether the input character string includes a character string stored in the prohibited phrase list 15 (T47, T48 in FIG. 8). However, the character conversion unit 12 may omit the processes of T41, T47, and T48 in FIG. 8. That is, the character conversion unit 12 may transition to the process of T42 regardless of whether the specified character input field is the password input field. In addition, the character conversion unit 12 may determine whether the specified character input field is the login information input field including the login ID input field 1131 and the password input field 1132 in T41 in FIG. 8, and proceed to the process of T47 in FIG. 8 when the specified character input field is not the login information input field.

In the embodiment described above, the smartphone 100 equipped with the display 113 is given as the information processing device. However, the technology described in the embodiment can also be applied to information processing devices other than the smartphone 100 (desktop personal computers, notebook personal computers, tablet personal computers, wearable computers, etc.). In addition, the character input field may be specified by operating a mouse or a hardware keyboard. Furthermore, characters may be input using a hardware keyboard instead of the screen keyboard 2024.

The embodiments and variations disclosed above can be combined with each other.

<Computer-readable recording medium>
An information processing program that causes a computer or other machine or device (hereinafter, computer, etc.) to realize any of the above functions can be recorded on a recording medium that can be read by the computer, etc. Then, the computer, etc. can provide the function by reading and executing the program from the recording medium.

Here, a computer-readable recording medium refers to a recording medium that stores information such as data and programs electrically, magnetically, optically, mechanically, or chemically and can be read by a computer. Examples of such recording media that can be removed from a computer include flexible disks, magneto-optical disks, Compact Disc Read Only Memory (CD-ROM), Compact Disc-Recordable (CD-R), Compact Disc-ReWritable (CD-RW), Digital Versatile Disc (DVD), Blu-ray Disc (BD), Digital Audio Tape (DAT), 8mm tape, and memory cards such as flash memory. Additionally, examples of recording media that are fixed to a computer include hard disks and ROMs.

11: Character input unit 12: Character conversion unit 13: Blacklist 14: Whitelist 15: Prohibited phrase list 100: Smartphone 101: SoC
1011: Application processor 1012: Memory 1013: Secure memory 1014: Communication control processor 102: SRAM
103: Flash memory 111: Speaker 112: Microphone 113: Display 1131: Login ID input field 1132: Password input field 114: Touch panel 121: Strong warning message 122: Weak warning message 1221: Button 123: Prohibited word warning message 200: Application layer 201: Web browser 202: SNS application 2021: Chat area 2022: Speech bubble 2023: New message input field 2024: Screen keyboard 300: OS layer 500: Information server F: Finger

Claims (6)

A display unit;
a storage unit that stores specific information that identifies a web page classified into a predetermined group;
A conversion unit that converts characters input into a character input field into another type of character,
The conversion unit is
When a character input field is specified from the screen displayed on the display unit, a program that caused the screen including the character input field to be displayed on the display unit is identified;
If the identified program is a web browser, acquiring specific information of a screen output by the web browser;
displaying a warning on the display unit depending on whether the acquired specific information is stored in the storage unit;
The storage unit further stores one or more words and phrases,
The conversion unit is
If the identified program is a web browser, it is further determined whether the specified character input field is a login information input field for inputting login information;
When the specified character input field is not the login information input field, it is determined whether or not a character string input into the character input field and confirmed includes a word or phrase stored in the storage unit;
When the confirmed character string includes a word or phrase stored in the storage unit, a warning is displayed on the display unit.
Information processing device. the storage unit stores specific information of web pages classified into a first group and specific information of web pages classified into a second group different from the first group;
The conversion unit is
When the acquired specific information is included in the first group, a first warning is displayed on the display unit;
When the acquired specific information is not included in either the first group or the second group, a second warning that is weaker than the first warning is displayed on the display unit.
The information processing device according to claim 1 . The storage unit further stores a list of words and phrases;
The conversion unit is
If the identified program is a message sending program for sending a message to another user, it is determined whether or not a character string that has been confirmed as being entered into the character input field includes a word or phrase stored in the storage unit;
When the confirmed character string includes a word or phrase stored in the storage unit, a warning is displayed on the display unit.
3. The information processing device according to claim 1 or 2. the storage unit is arranged in a secure memory to which access is restricted by a private key;
The conversion unit accesses the storage unit using the private key.
The information processing device according to claim 1 . a process of, when a character input field is specified from among the screens displayed on the display unit, identifying a program that has caused the screen including the character input field to be displayed on the display unit;
If the identified program is a web browser, acquiring specific information of a screen output by the web browser;
a process of displaying a warning on the display unit depending on whether the acquired identification information is stored in a storage unit that stores identification information for identifying a web page classified into a predetermined group,
The storage unit further stores one or more words and phrases,
The computer includes:
If the identified program is a web browser, the process further includes a process of determining whether the specified character input field is a login information input field for inputting login information;
a process of determining whether or not a character string whose input into the character input field has been confirmed includes a word or phrase stored in the storage unit when the specified character input field is not the login information input field;
and if the confirmed character string includes a word stored in the storage unit, displaying a warning on the display unit.
Information processing methods. a process of, when a character input field is specified from among the screens displayed on the display unit, identifying a program that has caused the screen including the character input field to be displayed on the display unit;
If the identified program is a web browser, acquiring specific information of a screen output by the web browser;
a process of displaying a warning on the display unit depending on whether the acquired identification information is stored in a storage unit that stores identification information for identifying a web page classified into a predetermined group ;
The storage unit further stores one or more words and phrases,
The computer includes:
If the identified program is a web browser, the process further includes a process of determining whether the specified character input field is a login information input field for inputting login information;
a process of determining whether or not a character string whose input into the character input field has been confirmed includes a word or phrase stored in the storage unit when the specified character input field is not the login information input field;
and if the confirmed character string includes a word stored in the storage unit, displaying a warning on the display unit .