Technique

User-agent fingerprinting

technique:user_agent_fingerprinting Also: user agent correlation

Using distinctive browser and operating-system user-agent information to correlate activity across systems.

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Relationships

Direction Predicate Other entity Origin EP
incoming INVOLVES LinkedIn data breach Explicit 86

Claims

LinkedIn data breach INVOLVES User-agent fingerprinting

Investigators used the hacker's distinctive user agent to correlate activity across IP addresses and services.

Explicit Confidence 98% · Jack Rhysider EP 86 Details

“if there was a matching user agent, then you could know that that’s probably the same person”