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  2. reCAPTCHA - Wikipedia

    en.wikipedia.org/wiki/ReCAPTCHA

    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 CAPTCHA may still be presented if the system is uncertain of the user's risk; Google also introduced a new type of CAPTCHA challenge designed ...

  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. Exclusive: Google launching reCAPTCHA for payments - AOL

    www.aol.com/finance/exclusive-google-launching...

    Alphabet's (GOOG, GOOGL) Google is expanding the availability of reCAPTCHA, and the verification technology will now be able to, for the first time, protect payments.

  5. Challenge–response authentication - Wikipedia

    en.wikipedia.org/wiki/Challenge–response...

    This makes it more difficult for an intruder to get the passwords, since the password itself is not stored, and it is very difficult to determine a password that matches a given hash. However, this presents a problem for many (but not all) challenge-response algorithms, which require both the client and the server to have a shared secret.

  6. Account Management - AOL Help

    help.aol.com/products/my-account

    If you're having issues sending and receiving emails for your AOL Mail account in a third-party email application, you may need to reauthenticate your account by removing and re-entering your password or removing and re-adding your AOL Mail account.

  7. Luis von Ahn - Wikipedia

    en.wikipedia.org/wiki/Luis_von_Ahn

    In 2007, von Ahn invented reCAPTCHA, [24] a new form of CAPTCHA that also helps digitize books. In reCAPTCHA, the images of words displayed to the user come directly from old books that are being digitized; they are words that optical character recognition could not identify and are sent to people throughout the web to be identified. ReCAPTCHA ...

  8. Challenge-Handshake Authentication Protocol - Wikipedia

    en.wikipedia.org/wiki/Challenge-Handshake...

    The ID chosen for the random challenge is also used in the corresponding response, success, and failure packets. A new challenge with a new ID must be different from the last challenge with another ID. If the success or failure is lost, the same response can be sent again, and it triggers the same success or failure indication.

  9. Mastercard, Visa failed to stop OnlyFans payments for child ...

    www.aol.com/news/mastercard-visa-failed-stop...

    The complaint said that the whistleblower and other anti-trafficking experts, including U.S. federal agents, alerted Visa and Mastercard to unlawful content on OnlyFans in a series of calls in ...