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Content Security Policy notes for developers

Master Content Security Policy with a curated set of 2 developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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01 · Content Security Policy

CSP Fundamentals: Directives, self & Blocking Inline Scripts

Content Security Policy: Directives, self & Blocking Inline Scripts. A Content Security Policy lets a site declare an allowlist of trusted sources for scripts, styles, images, and other resources -- primarily to mitigate…

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02 · Content Security Policy

CSP: Report-Only Mode, Common Directives & Migration

CSP: Report-Only Mode, Common Directives & Migration. Testing Safely With Report-Only Mode. Content-Security-Policy-Report-Only: default-src 'self'; report-uri /csp-violations # Violations are logged/reported but NOT act…

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Reactfrontend

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Apr 2, 2026
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