TCP SYN (JA4T)

42340_2-4-1-1-1-1-1-1-1-1-1-1-1-3_1424_10

first seen 2026-08-07 06:15 · last seen 2026-10-12 13:42 · JSON

Distinct clients per day (last 30 days, peak 4/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

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)

HTTP request (JA4H)

HTTP/2 frames (Akamai)

TCP SYN (p0f)

User-Agent

Country

Network (ASN)