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joe job
A joe job is a spamming technique that sends out unsolicited e-mails using spoofed sender data. Early joe jobs aimed at tarnishing the reputation of the apparent sender or inducing the recipients to take action against them (see also e-mail spoofing), but they are now typically used by commercial spammers to conceal the true origin of their messages.
==Origin and motivation==
The name "joe job" originated from such a spam attack on Joe Doll, webmaster of joes.com, in 1997.〔(【引用サイトリンク】url=http://searchsecurity.techtarget.com/definition/Joe-job )〕 One user's joes.com account was removed due to advertising through spam. In retaliation, the user sent another spam with the "reply-to" headers forged to make it appear to be from Joe Doll. Besides prompting angry replies, it also caused joes.com to fall prey to denial-of-service attacks that temporarily took the web site down, from antispam vigilantes who thought he had sent the email.
Some e-mail joe jobs are acts of revenge like the original, whether by individuals or by organizations that also use spam for other purposes. Spammers use the technique to cycle through domains and try to get around spam filters and blocks.
Joe-jobbers could also be businesses trying to defame a competitor or a spammer trying to harm the reputation of an anti-spam group or filtering service. Joe job attacks in other media are often motivated politically or through personal enmity.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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