Digital fingerprinting—typically implemented as cryptographic hashing—ensures the integrity of logs by allowing verification that no changes occurred after storage. By saving the hash separately, any tampering becomes immediately detectable through comparison. This method aligns with controls in NIST SP 800-92 and CIS Control 8 (Audit Log Management). Encryption ensures confidentiality but not change detection. Shared folders and obfuscation fail to provide assurance against post-write modification. Forensic soundness and non-repudiation require verifiable tamper evidence.
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