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Re: [tlug] CAPTCHA on keitai
- Date: Mon, 14 Apr 2008 18:49:12 +0900
- From: Shawn <javajunkie@example.com>
- Subject: Re: [tlug] CAPTCHA on keitai
- References: <d8fcc0800803172314pe18074fxbc03ad0d6e686473@mail.gmail.com> <87d4psqynb.fsf@uwakimon.sk.tsukuba.ac.jp> <20080318093415.GD2593@lucky.cynic.net> <87lk4fvder.fsf@uwakimon.sk.tsukuba.ac.jp> <20080322090057.GG5267@lucky.cynic.net> <878x0afsj9.fsf@uwakimon.sk.tsukuba.ac.jp> <20080324040919.GD2762@lucky.cynic.net> <871w5zg01t.fsf@uwakimon.sk.tsukuba.ac.jp> <20080325003659.GC13741@pragmatic.cynic.net> <87myone1q2.fsf@uwakimon.sk.tsukuba.ac.jp> <20080326041531.GD2489@lucky.cynic.net> <871w5yey24.fsf@uwakimon.sk.tsukuba.ac.jp>
> In which case naive captchas won't do, either, and probably neither > will sophisticated captchas. Apparently there was an "evolutionary leap" in attacks that "is aggressive and instantaneous in terms of CAPTCHA breaking host turn-around time" -- six seconds total. see http://blogs.zdnet.com/security/?p=1023 Shawn
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