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Learn to master Content Security Policy (CSP) implementation from basic concepts to advanced techniques in this comprehensive conference talk by Halvor Sakshaug, a leading Stack Overflow contributor for CSP questions. Discover why this HTTP response header has become a PCI DSS requirement and is increasingly expected by penetration testers and security-conscious clients. Navigate through the complexities of CSP directives, enforcement levels, browser compatibility issues, and implementation variations while understanding how this powerful security feature can protect your web applications or potentially break your site if misconfigured. Explore efficient policy building strategies, critical implementation considerations, deprecation handling, fallback mechanisms, and violation report management. Gain practical insights into CSP's security benefits and learn to avoid common pitfalls that could compromise your website's functionality while strengthening its security posture.
