TCP SYN (JA4T)

65535_2-4-8-1-3_1314_6

first seen 2026-09-09 21:58 · last seen 2026-09-15 04:26 · JSON

Decomposed attributes

TCP window65535
Option kinds2-4-8-1-3
MSS1314
Window scale6

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d1515h1_8daaf6152771_de4a06bb82e32

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_0000000000002

TCP SYN (p0f)

fingerprintco-occurrences
4:55+9:0:1314:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:43+21:0:1314:65535,6:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.361

Country

fingerprintco-occurrences
US · United States1
BE · Belgium1

Network (ASN)

fingerprintco-occurrences
AS16276 · OVH SAS1
AS136258 · BrainStorm Network, Inc1