問71
頻出度★★★
スパムメールの説明として，適切なものはどれか。
平成21年度 秋期 ITパスポート試験 問71
テクノロジ系セキュリティ › 情報セキュリティ
This question's explanation and your answers so far.
解説
問 71
- ア
正解 ア is correct. Spam email (junk email) is email sent in large volumes and indiscriminately to an unspecified large number of addresses for purposes such as advertising, solicitation, or fraud, even though the recipients have not agreed to receive it. There are two key points: the recipient has not given consent (has not opted in), and the messages are sent indiscriminately in bulk. Choice ア states exactly these two points. In Japan, the Act on Regulation of Transmission of Specified Electronic Mail makes opt-in the principle, and sending advertising email without prior consent is regulated.
Incorrectイ
This describes a mailing list. It is a mechanism that delivers the same email to all pre-registered participants, that is, to people who have agreed to receive it. Because the recipients have consented, it is the exact opposite of spam.
Incorrectウ
This describes chain mail (the unlucky-letter type). Its characteristic is that recipients themselves forward it to several other people, so it spreads in a chain reaction. That growth mechanism differs from spam, which a sender pushes out indiscriminately and one-sidedly.
Incorrectエ
This describes a system such as an electronic bulletin board (BBS), where users post messages and exchange information with an unspecified large number of people. It refers to a place or system for exchanging information, not to email itself, so it is unrelated to the definition of spam.
ここがポイント
- Definition of spam (junk email): email sent indiscriminately and in bulk to an unspecified large number of people without the recipient's consent. The keys for judging are whether consent exists and whether it is indiscriminate and mass-sent.
- Distinguishing confusable email-related terms: mailing list (the same content delivered to registered members), chain mail (spreads in a chain through recipients forwarding it), and electronic bulletin board (a post-type information exchange system).
用語