問13
頻出度★★★
個人情報保護法に規定された匿名加工情報の説明として, 最も適切なものはどれか。
令和8年度 ITパスポート試験 問13
ストラテジ系法務 › セキュリティ関連法規
This question's explanation and your answers so far.
解説
問 13
Incorrectア
Statistical information published by bodies such as the Ministry of Health, Labour and Welfare or the Statistics Bureau is already aggregated data from which no specific individual can be identified, so its starting point differs from anonymously processed information, which is created by processing personal information. This describes combining external statistical data with one's own company information for use, and is not the definition of anonymously processed information.
Incorrectイ
The phrase “information for which the ability to restore it to the original personal information is preserved” is the decisive error. A mandatory requirement of anonymously processed information is that it be processed so that it cannot be restored; information that retains the possibility of restoration does not qualify as anonymously processed information (it differs in nature from pseudonymously processed information, which separately keeps clues for restoration).
- ウ
正解 The correct answer is ウ. Anonymously processed information refers to information created by processing personal information using a method prescribed by the Act on the Protection of Personal Information, so that no specific individual can be identified and so that it cannot be restored to the original personal information. As long as these requirements are met, it can be utilized — for purposes such as data analysis or provision to third parties — without obtaining the individual's consent, under certain rules (processing method, security management, public disclosure, etc.). Choice ウ covers all three core requirements: “anonymized by a method prescribed by law”, “made impossible to restore”, and “usable under certain rules without the individual's consent”, so it matches the definition most appropriately.
Incorrectエ
Information collected in such a way that the individual can still be identified by other information such as a personal identification number, without obtaining the name, is still “personal information” from which a specific individual can be identified, and is the exact opposite of anonymously processed information, which is processed to be neither identifiable nor restorable.
ここがポイント
- Definition of anonymously processed information (Act on the Protection of Personal Information) = information processed so that no specific individual can be identified and so that it cannot be restored to the original personal information.
- An advantage of the system is that anonymously processed information can be utilized and provided to third parties without the individual's consent, under certain rules (processing standards, security management, disclosure obligations, etc.).
用語