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More informationDefending against XSS with CSP
Content Security Policy (CSP) started as a simple defense but quickly evolved into a complex security policy. This article investigates how to build an effective CSP policy to counter XSS vulnerabilities. Concretely, we use step-by-step examples to highlight bypasses against CSP and examine how to use nonces, hashes, and 'strict-dynamic' to build a robust CSP policy for modern applications.
13 December 2021 Security Policies Browser Security, Content Security Policy (CSP), XSS
This article is published as a guest post on Auth0’s blog. You can read the full article over there.
About Dr. Philippe De Ryck
Hi, I'm Philippe, and I help developers protect companies through better web security. Learn more about my security training program, advisory services, or check out my recorded conference talks.
Want to learn more about OAuth 2.0 and OpenID Connect?
Save yourself days of digging through dozens of specs with this online course
More information
Dr. Philippe De Ryck
Hi, I'm Philippe, and I help developers protect companies through better web security. As the founder of Pragmatic Web Security, I travel the world to teach practitioners the ins and outs of building secure software.
Talks and workshops
You will often find me speaking and teaching at public and private events around the world. My talks always encourage developers to step up and get security right.
Articles
Security is often about small nuances. In my articles, I dive deeper into various security topics, providing concrete guidelines and advice. My articles also answer questions I often get while speaking or teaching.
Security resources
Getting security right is all about knowledge. I strongly believe in sharing that knowledge to move forward as a community. Among my resources, you can find developer cheat sheets, recorded talks, and extensive slide decks.
Mailing list
Subscribe to the Pragmatic Web Security mailing list to stay up to date on the latest activities and resources.