Online Judge系统在线部分的安全需要防范用户的代码攻击和提交攻击,也要防范渗透和其他方面的注入。通过探究沙盒的性质以及对于网站的维护方面,对安全问题进行了实际的分析。实践表明,在安全方面,沙盒有重要的贡献,防范了用户的恶意代码提交以及网站注入、渗透等攻击。 Online Judge The security of the online part of the system requires protection against code attacks and attacks by users, as well as infiltration and other injections. By exploring the nature of the sandbox and the site’s maintenance, a practical analysis of security issues has been made. Practice shows that, in terms of security, sandbox has an important contribution to prevent the user malicious code submission and site injection, infiltration and other attacks.