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JA3

A method for profiling SSL/TLS Clients with easy-to-produce client fingerprints.

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Threat Management
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JA3 Description

JA3 is a method for creating SSL/TLS client fingerprints that can be easily shared for threat intelligence. It was invented at Salesforce in 2017 but is now maintained by John Althouse at FoxIO-LLC. The project includes JA3 and JA3S scripts for Zeek and Python, with support added to various cybersecurity tools and platforms.

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