This project is about collecting and sharing JA3 hashes.


The JA3 algorithm extracts SSL handshake settings for fingerprinting the SSL stack. It can help identifying an operating system in case of system typical libraries such as Microsoft Secure Channel also known as Schannel. In other cases it can reveal integrated libraries such as the Network Security Services (NSS) Mozilla products, including Firefox, Thunderbird, SeaMonkey, and Firefox OS. Last but not least it can identify malware see abuse.ch.