CAPTCHA/External Links: Revision history

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13 August 2010

  • curprev 19:1819:18, 13 August 2010‎ imported>Daniel Mietchen‎ 395 bytes +395‎ * [http://cseweb.ucsd.edu/~savage/papers/UsenixSec10.pdf Re: CAPTCHAs – Understanding CAPTCHA-Solving Services in an Economic Context] — a detailed analysis of the market for solving CAPTCHAs

5 August 2010

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