Which mechanism prevents the browser from executing a script if its integrity hash does not match the fetched content?

Question

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Accepted Answer

Subresource Integrity (SRI) allows browsers to verify that resources fetched from CDNs have not been manipulated by checking a cryptographic hash. If the hash of the downloaded file does not match the integrity attribute, the browser refuses to execute the script. CSP is a broader security layer that restricts sources, but it does not perform file-level integrity verification. CORP and HSTS handle resource sharing and connection security, respectively, rather than file content validation.