Science news articles about 'web site security'

... malicious hackers are exploiting web site security holes to attack their victims' computers. Programmers ... functions. If you belonged to a social-networking site, for instance, you might be able to e- ...

... Luis von Ahn have taken a widely used Web site security measure, called a CAPTCHA, and given it ... books produced prior to the computer age. When Web visitors solve one of the distorted-letter puzzles so ...