week 6 homework - 1 CAPTCHA CAPTCHA stands...

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1. CAPTCHA CAPTCHA stands for "Completely Automated Public Turing test to tell Computers and Humans Apart". CAPTCHA is a computer program or scheme intended to distinguish human as of machine input, typically as a way of awkward spam and automated extraction of data as of websites. CAPTCHA is very helpful to prevent bots from overrunning sites with spam, fraudulent registrations, fake sweepstakes entries, and other nefarious things, publishers responded by testing users to see if they were human or not. For Example: a CAPTCHA features an image file of slightly distorted alphanumeric character A human can usually read the characters in the image without too much difficulty. A bot program is able to recognize that the content contains an image, but it has no idea what the image is. 2. Drive by hacking Drive-by hacking is when someone uses an unsecured wireless network to either gain access to that networks resources or using that internet connection for hacking into other systems on the internet making themselves almost untraceable.
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