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  2. 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.

  3. Gekko (optimization software) - Wikipedia

    en.wikipedia.org/wiki/Gekko_(optimization_software)

    GEKKO works on all platforms and with Python 2.7 and 3+. By default, the problem is sent to a public server where the solution is computed and returned to Python. There are Windows, MacOS, Linux, and ARM (Raspberry Pi) processor options to solve without an Internet connection.

  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. 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 ...

  5. reCAPTCHA - Wikipedia

    en.wikipedia.org/wiki/ReCAPTCHA

    An example of how reCAPTCHA challenges were presented in 2010, [29] containing the words "and chisels" The main purpose of a CAPTCHA system is to block spambots while allowing human users. On December 14, 2009, Jonathan Wilkins released a paper describing weaknesses in reCAPTCHA that allowed bots to achieve a solve rate of 18%.

  6. Challenge–response authentication - Wikipedia

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

    The simplest example of a challenge-response protocol is password authentication, where the challenge is asking for the password and the valid response is the correct password. An adversary who can eavesdrop on a password authentication can authenticate themselves by reusing the intercepted password. One solution is to issue multiple passwords ...

  7. Oblivious pseudorandom function - Wikipedia

    en.wikipedia.org/wiki/Oblivious_Pseudorandom...

    A CAPTCHA or "Completely Automated Public Turing test to tell Computers and Humans Apart." [ 14 ] is a mechanism to prevent automated robots or ( bots ) from accessing websites. Lately, mechanisms for running CAPTCHA tests have been centralized to services such as a Google and CloudFlare , but this can come at the expense of user privacy.

  8. HiGHS optimization solver - Wikipedia

    en.wikipedia.org/wiki/HiGHS_optimization_solver

    The SciPy scientific library, for instance, uses HiGHS as its LP solver [13] from release 1.6.0 [14] and the HiGHS MIP solver for discrete optimization from release 1.9.0. [15] As well as offering an interface to HiGHS, the JuMP modelling language for Julia [ 16 ] also describes the specific use of HiGHS in its user documentation. [ 17 ]

  9. Talk:ReCAPTCHA/Archive 1 - Wikipedia

    en.wikipedia.org/wiki/Talk:ReCAPTCHA/Archive_1

    It appears that some recommend that Wikimedia itself use the service in the future, too (of course that's off-topic, but an example of the service's popularity and the potential implications). 66.11.179.30 08:52, 24 January 2011 (UTC) Also, it should be added that reCaptcha can be a bad thing as a user may be used to solve another's captcha.