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  2. 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. The characters can't be read by a computer and must be entered manually, ensuring only a real person can pass the test. Why am I being ...

  3. Message authentication code - Wikipedia

    en.wikipedia.org/wiki/Message_authentication_code

    20] In this example, the sender of a message runs it through a MAC algorithm to produce a MAC data tag. The message and the MAC tag are then sent to the receiver. The receiver in turn runs the message portion of the transmission through the same MAC algorithm using the same key, producing a second MAC data tag.

  4. 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.

  5. reCAPTCHA - Wikipedia

    en.wikipedia.org/wiki/ReCAPTCHA

    reCAPTCHA Inc. [1] is a CAPTCHA system owned by Google.It enables web hosts to distinguish between human and automated access to websites. The original version asked users to decipher hard-to-read text or match images.

  6. Comparison of wiki software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_wiki_software

    Yes: syntax highlighting for code blocks; GitHub-flavored Markdown syntax; full HTML; images, videos, documents Wikispaces: Yes Yes Yes Yes Yes Yes XWiki: Yes Yes Yes Yes Yes Yes Yes Zim: Yes Yes Yes Yes Yes Wiki software Public Private Corporate, enterprise Education Intranet Personal Scientific, technical, mathematical

  7. Wikipedia:CHECKWIKI/WPC 111 dump - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:CHECKWIKI/WPC...

    The Wikipedia CHECKWIKI WPC 111 dump page provides information on Wikipedia articles with potential issues detected by the CheckWiki tool.

  8. Gatekeeper (macOS) - Wikipedia

    en.wikipedia.org/wiki/Gatekeeper_(macOS)

    Gatekeeper is a security feature of the macOS operating system by Apple. [1] [2] It enforces code signing and verifies downloaded applications before allowing them to run, thereby reducing the likelihood of inadvertently executing malware.

  9. Sam Hocevar - Wikipedia

    en.wikipedia.org/wiki/Sam_Hocevar

    [13] [14] [15] PWNtcha was the first CAPTCHA decoder framework to defeat multiple CAPTCHAs and was referred to as the "most famous" CAPTCHA breaker in a 2009 Stanford University publication. [ 16 ] Hocevar authored the WTFPL version 2, an extremely liberal, permissive free software license that is recognized by the Free Software Foundation . [ 17 ]