TCP SYN (JA4T)

65535_2-4-8-1-3_1240_7

first seen 2026-09-04 04:23 · last seen 2026-09-09 13:16 · JSON

Decomposed attributes

TCP window65535
Option kinds2-4-8-1-3
MSS1240
Window scale7

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_0a20fe35d3a52
t13d1516h1_8daaf6152771_1a63afa7c4781

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_0000000000002
ge11nn14enus_4a2973d235de_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:51+13:0:1240:65535,7:mss,sok,ts,nop,ws:df,id+:02
4:49+15:0:1240:65535,7:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
US · United States2
CA · Canada1

Network (ASN)

fingerprintco-occurrences
AS22781 · Strong Technology, LLC.2
AS62651 · Strong Technology, LLC.1