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Web application security is a branch of Information Security that deals specifically with security of websites, web applications and web services. At a high level, Web application security draws on the principles of application security but applies them specifically to Internet and Web systems.〔(【引用サイトリンク】title= Web Application Security Overview )〕 == Security threats== With the emergence of Web 2.0, increased information sharing through social networking and increasing business adoption of the Web as a means of doing business and delivering service, websites are often attacked directly. Hackers either seek to compromise the corporate network or the end-users accessing the website by subjecting them to drive-by downloading. As a result, industry is paying increased attention to the security of the web applications themselves in addition to the security of the underlying computer network and operating systems. The majority of web application attacks occur through cross-site scripting (XSS) and SQL injection attacks which typically result from flawed coding, and failure to sanitize input to and output from the web application. These are ranked in the 2009 CWE/SANS Top 25 Most Dangerous Programming Errors. Phishing is another common threat to the Web application and global losses from this type of attack in 2012 were estimated at $1.5 billion. According to the security vendor Cenzic, the top vulnerabilities in March 2012 include: :: 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「web application security」の詳細全文を読む スポンサード リンク
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