Explore five dangerous web application vulnerabilities beyond the OWASP Top 10 in this 45-minute conference talk from Hack in Paris 2017. Delve into the intricacies of Output Encoding, Regular Expressions, Server Side Request Forgery, and more, as Aaron Hnatiw provides both exploitation techniques and mitigation strategies for each vulnerability. Learn how these lesser-known security risks can impact web applications and gain valuable insights for developers and pentesters alike. Discover practical testing methods, defense mechanisms, and the importance of protocol whitelisting to enhance your web application security knowledge beyond standard categorizations.