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  2. CAPTCHA - Wikipedia

    en.wikipedia.org/wiki/Captcha

    The purpose of CAPTCHAs is to prevent spam on websites, such as promotion spam, registration spam, and data scraping. Many websites use CAPTCHA effectively to prevent bot raiding. CAPTCHAs are designed so that humans can complete them, while most robots cannot. [ 14 ] Newer CAPTCHAs look at the user's behaviour on the internet, to prove that ...

  3. 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. Version 2 also asked users to decipher text or match images if the analysis of cookies and canvas rendering suggested the page ...

  4. Add or disable 2-step verification for extra security - AOL Help

    help.aol.com/articles/2-step-verification...

    Use 2-step with authenticator app verification. Authenticator apps provide secure verification codes that act as the second step in 2-step verification. After entering your password, you'll need to enter the code generated by your authenticator app to sign in. Download an authenticator app from the Google Play Store or App Store.

  5. XRumer - Wikipedia

    en.wikipedia.org/wiki/Xrumer

    The technique employed by XRumer to bypass the CAPTCHA protection in Gmail and mail.ru is averaging. A captcha is a challenge-response test frequently used by internet services in order to verify that the user is actually a human rather than a computer program. Commonly, captchas are dynamically created images of random numbers and/or letters.

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

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

    Call live aol support at. 1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. Fix issues with AOL Mail image challenges. AOL Mail uses many security measures to keep your account secure, one of which is CAPTCHA or image challenges when sending mail.

  7. Bypass Paywalls Clean - Wikipedia

    en.wikipedia.org/wiki/Bypass_Paywalls_Clean

    Bypass Paywalls Clean (BPC) is a free and open-source web browser extension that circumvents paywalls. Developed by magnolia1234, the extension uses techniques such as clearing cookies and showing content from web archives .

  8. Multi-factor authentication - Wikipedia

    en.wikipedia.org/wiki/Multi-factor_authentication

    Multi-factor authentication is typically deployed in access control systems through the use, firstly, of a physical possession (such as a fob, keycard, or QR-code displayed on a device) which acts as the identification credential, and secondly, a validation of one's identity such as facial biometrics or retinal scan.

  9. URL shortening - Wikipedia

    en.wikipedia.org/wiki/URL_shortening

    This may sometimes be done using short, CAPTCHA-protected URLs, but this is not common. [6] Makers of URL shorteners usually register domain names with less popular or esoteric Top-level domains in order to achieve a short URL and a catchy name, often using domain hacks. This results in registration of different URL shorteners with a myriad of ...