salesforce / ja3

JA3 is a standard for creating SSL client fingerprints in an easy to produce and shareable way.

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it seems ja3 not really get rid of the GREASE

smileboywtu opened this issue · comments

commented

i have head to https://ja3er.com/ , after some of time , i get another ja3 hash, that's change after a while , i have read this draft document.

my current browser version:
chrome version 74.0.3729.157(64 位)
mac osx 10.11.6

As Chrome updates itself you may get different JA3 values. Also, Chrome sends an initial JA3 that's always the same but then sends a slightly different one when reconnecting to a server it is already familiar with. For example, see:
66918128f1b9b03303d77c6f2eefd128
e1e178b202995483151741373b7c8c1d
The difference appears to be that ja3er isn't using EC ciphers so on reconnect, chrome doesn't send EC extensions.