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Training Camp • Cybersecurity Glossary
Subresource Integrity (SRI) lets browsers verify CDN-loaded scripts and styles against a cryptographic hash, blocking tampered third-party resources.
Subresource Integrity (SRI) Definition: Subresource Integrity (SRI) lets browsers verify CDN-loaded scripts and styles against a cryptographic hash, blocking tampered third-party resources.
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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