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  2. reCAPTCHA - Wikipedia

    en.wikipedia.org/wiki/ReCAPTCHA

    In 2013, reCAPTCHA began implementing behavioral analysis of the browser's interactions to predict whether the user was a human or a bot. The following year, Google began to deploy a new reCAPTCHA API, featuring the "no CAPTCHA reCAPTCHA"—where users deemed to be of low risk only need to click a single checkbox to verify their identity. A ...

  3. CAPTCHA - Wikipedia

    en.wikipedia.org/wiki/Captcha

    This CAPTCHA (reCAPTCHA v1) of "smwm" obscures its message from computer interpretation by twisting the letters and adding a slight background color gradient.A CAPTCHA (/ ˈ k æ p. tʃ ə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam.

  4. Fix issues with AOL Mail image challenges - AOL Help

    help.aol.com/articles/what-should-i-do-if-i-get...

    AOL Mail uses many security measures to keep your account secure, one of which is CAPTCHA or image challenges when sending mail. These challenges exist to make it harder for hackers to access your accounts.

  5. Wikipedia:Perennial proposals - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Perennial_proposals

    Proposal: Use the reCAPTCHA CAPTCHA system in place of our own. Reasons for previous rejection: The primary reasons for rejection were given by Brooke Vibber, former CTO of the Wikimedia foundation. Vibber stated that: reCAPTCHA is proprietary, whereas Wikimedia prefers to use free and open-source software.

  6. List of open file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_open_file_formats

    An open file format is a file format for storing digital data, defined by a published specification usually maintained by a standards organization, and which can be used and implemented by anyone. For example, an open format can be implemented by both proprietary and free and open source software , using the typical software licenses used by each.

  7. Open-source software - Wikipedia

    en.wikipedia.org/wiki/Open-source_software

    This is an accepted version of this page This is the latest accepted revision, reviewed on 27 January 2025. Software licensed to ensure source code usage rights Open-source software shares similarities with free software and is part of the broader term free and open-source software. For broader coverage of this topic, see open-source-software movement. A screenshot of Manjaro linux running the ...

  8. Turing test - Wikipedia

    en.wikipedia.org/wiki/Turing_test

    The Turing test, originally called the imitation game by Alan Turing in 1949, [2] is a test of a machine's ability to exhibit intelligent behaviour equivalent to that of a human. In the test, a human evaluator judges a text transcript of a natural-language conversation between a human and a machine.

  9. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    OAR file archive format, where ?? is the format version. 74 6F 78 33: tox3: 0 tox Open source portable voxel file [57] 4D 4C 56 49: MLVI: 0 MLV Magic Lantern Video file [58] 44 43 4D 01 50 41 33 30 50 41 33 30: DCM␁PA30 PA30: 0 Windows Update Binary Delta Compression file [59] 37 7A BC AF 27 1C: 7z¼¯'␜ 0 7z 7-Zip File Format 1F 8B ...