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By default, all scripts on a webpage are allowed to send and fetch data to any site they want. This can be a security problem. Imagine one of your JavaScript dependencies sends all keystrokes, including passwords, to a third party website. It's very easy for someone to hide this malicious behaviour, making it nearly impossible for you to detect it (unless you manually read all the JavaScript code on your site). For a better idea of why you really need to set content security policy headers,...

bWAPP, or a buggy web application, is a free and open source deliberately insecure web application. bWAPP helps security enthusiasts, developers and students to discover and to prevent web vulnerabilities. bWAPP prepares one to conduct successful penetration testing and ethical hacking projects. What makes bWAPP so unique? Well, it has over 100 web bugs! It covers all major known web vulnerabilities, including all risks from the OWASP Top 10 project. The focus is not just on one specific...

...Each checkbox can be used to include a huge collection of payloads into the selected tags (HTML5sec, XSS Cheat Sheet). If a checkbox will be not selected, the string aaa'bbb"ccc<ddd is automatically included into the unchecked IPTC tag. Therefore, testing for XSS vulnerabilities via IPTC metadata is possible by looking into the source code of the attacked Web application; strictly speaking for aaa'bbb"ccc<ddd or alternatively by verifying if, for example, alert-windows appear due to the XSS vector collection.