How to Update Your Content Security Policy

Content Security Policies (CSPs) help prevent cross-site scripting and clickjacking attacks by approving specific content types, which are then enforced to prevent unauthorized access. A CSP defines trusted content sources and allows browsers to submit error reports when violations occur, which can be integrated into monitoring dashboards for better visibility. The policy has two modes: enforcing and actively blocking resource loading and execution, or collecting errors in a "report-only" mode that provides real-time insights without disrupting customers. Implementing a CSP requires careful consideration of directives and their order to ensure broad coverage and resilience against attacks.