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Global Accelerated Learning • Est. 1999
Glossary Term Subresource Integrity (SRI)

Training Camp • Cybersecurity Glossary

What is Subresource Integrity (SRI)?

Subresource Integrity (SRI) lets browsers verify CDN-loaded scripts and styles against a cryptographic hash, blocking tampered third-party resources.

Glossary > Application & API Security > Subresource Integrity (SRI)

Understanding Subresource Integrity (SRI)

Subresource Integrity (SRI) is a web security feature that lets browsers verify that fetched resources, such as scripts and stylesheets loaded from CDNs, have not been tampered with. It works by adding a cryptographic hash to the integrity attribute of script or link tags; the browser computes the hash of the downloaded file and refuses to execute it if it does not match, defending against compromised or malicious third-party resources.

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