Web site Security: Captcha Verification code is easy to identify

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Internet security company Imperva recently found that the "CAPTCHA" query/Response technology can easily be identified. The verification code is written by a computer program, and its ultimate goal is to differentiate between people and computers. "One of its inherent flaws is the inability to identify human attacks," Imperva's report said. Therefore, a verification code does not protect the security of the site's role. ”

In addition, there is a disadvantage is that some of the identification code may not be very good to identify, resulting in some people can not pass the verification. To be able to solve such problems, Imperva recommends that you use some mini games to replace the identification code.

Imperva Report file: (PDF download Http://www.imperva.com/docs/HII_a_CAPTCHA_in_the_Rye.pdf)