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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.
Luis von Ahn was born and raised in Guatemala City.He is of Guatemalan German-Jewish descent through his father. His mother was one of the first women in Guatemala to complete medical school, gave birth von Ahn at age 42, and raised him as a single mother. [9]
Gili Raanan (born 1969) is an Israeli venture capitalist and one of the inventors of CAPTCHA, the WAF and many other inventions in the fields of Cybersecurity. Raanan started Sanctum in 1997, and rolled out the first Web application firewall AppShield and the first Web application penetration testing software AppScan.
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 ...
Alan Mathison Turing OBE FRS ( / ˈtjʊərɪŋ /; 23 June 1912 – 7 June 1954) was an English mathematician, computer scientist, logician, cryptanalyst, philosopher and theoretical biologist. [ 5] He was highly influential in the development of theoretical computer science, providing a formalisation of the concepts of algorithm and computation ...
Sisal production invented by the Maya. Tobacco. Bottle gourds – the ancient Mexicans learned to first cultivate bottle gourds around 8,000 BCE. Indigenous peoples grew bottle gourds for use as bowls, scoops, colanders, ladles, spoons, canteens, and dippers. Larger gourds were used as cooking vessels.
CAPTCHA is a form of reverse Turing test. Before being allowed to perform some action on a website, the user is presented with alphanumerical characters in a distorted graphic image and asked to type them out. This is intended to prevent automated systems from being used to abuse the site.
Levchin made contributions to PayPal's anti-fraud efforts [1] and was the co-creator of the Gausebeck-Levchin test, one of the first commercial implementations of a CAPTCHA challenge response human test. He founded or co-founded the companies Slide.com, HVF, and Affirm. He was an early investor in Yelp and was their largest shareholder in 2012 ...