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ZeriFlow Journal

Security guides your team can ship this week

Actionable articles on TLS, headers, CSP, privacy, and practical hardening for modern web apps.

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Web Security

Permissions-Policy Header: Lock Down Browser APIs on Your Website

Apr 28, 2026·10 min

The Permissions-Policy header gives you fine-grained control over which browser APIs your pages and embedded content can access. It replaced the deprecated Feature-Policy header and is now a critical privacy and security control for any modern web application.

#permissions-policy#security-headers#browser-security
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