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随着计算机网络技术的迅猛发展,网络安全问题日趋严重。验证码是防范网络上有人利用机器自动批量注册、暴力破解密码的一种安全措施,它可以甄别访问者是个人用户还是机器。深入了解验证码相关知识,能提高网站合法用户的警惕性,有效防范个人网上信息的泄露。本文依次介绍了验证码的工作原理、常见类型、功能作用、验证码生成条件等常识,希望对广大合法用户有所帮助。
With the rapid development of computer network technology, network security problems are becoming more and more serious. CAPTCHA is a security measure to prevent someone on the network from using the machine to automatically batch register and violently crack the password. It can identify whether the visitor is an individual user or a machine. In-depth understanding of CAPTCHA knowledge, can enhance the vigilance of legitimate users of the site, effectively prevent the disclosure of personal online information. This paper introduces the working principle of CAPTCHA, common types, functions, CAPTCHA and other common sense in turn, hoping to help the legitimate users.