中文摘要：

程序安全是信息安全研究的一个重要方向，主要研究程序缺陷分析和安全保护技术等。介绍程序缺陷分析研究及其分类方法，然后将程序安全保护研究分为三类主要途径进行重点阐述和分析，最后讨论程序安全研究的发展趋势。

英文摘要：

Program security is gradually becoming an active field in information security technology. It mainly includes program vulnerabilities analysis and program security protection technologies. In this paper,recent researches on program security are summarized. The development and related technologies,especially the three main approaches to program security protection, are synthetically reviewed in detail. In the end, research directions in this area are also discussed.