Important notice about SecAppDev 2020

Due to the current situation with COVID-19 (Corona), with deep regret, we feel bound to postpone SecAppDev 2020 indefinitely. While there have been no official instructions to postpone events such as ours or reduce travel, both attendees and speakers have informed us that they are unable to attend SecAppDev.

We hope everyone in SecAppDev stays healthy, and wish everyone the best for the coming months.

SecAppDev 2020 Lecture Details

The ultimate guide to Content Security Policy

Lukas Weichselbaum
Wednesday March 11, 14:00 - 15:30
Short description

Even with hardened frameworks and thorough security reviews, there's no guarantee that an application is free of XSS. In this session, I'll present different flavors of CSP, which can serve as a robust defense-in-depth mechanism against XSS.


Google is a prime target for attackers. As a result, Google has plenty of experience battling all kinds of XSS attacks. In recent years, they have successfully deployed a nonce-based CSP, one of the most misunderstood and arguably, most powerful web mitigation techniques.

This session provides an in-depth technical analysis of the effectiveness of different flavors of CSP for the many classes of XSS vulnerabilities, busting myths, and common misunderstandings, and explore the often fuzzy boundaries between hardening and mitigation techniques.

Key takeaway

Understand how to use CSP as a robust defense-in-depth mechanism against XSS.

Content level


Target audience

Anyone building, designing or securing web applications


Technical aspects of web applications (HTML, JS, HTTP) and ideally basic understanding of Content Security Policy

SecAppDev is the most immersive application security course you have ever seen

Book your seat now

Lukas Weichselbaum

Lukas Weichselbaum

Staff Information Security Engineer, Google

Lukas is a staff information security engineer at Google with 10+ years of industry experience who frequently speaks at international infosec and developer conferences. He's passionate about securing web applications from common web vulnerabilities and leads the Google-wide Content Security Policy (CSP) adoption effort. Lukas also co-authored the CSP3 W3C specification and is the creator of the CSP Evaluator.

Full speaker profile

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