TCP SYN (JA4T)
64766_2-1-3-1-1-4_1378_8
first seen 2026-08-17 19:19 · last seen 2026-08-17 19:19 · JSON
Decomposed attributes
| TCP window | 64766 |
|---|---|
| Option kinds | 2-1-3-1-1-4 |
| MSS | 1378 |
| Window scale | 8 |
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)
| fingerprint | co-occurrences |
|---|---|
t13d1515h2_8daaf6152771_a54fffd0eb61 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nr12enus_979a40433f82_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 155.0.1, +32 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (p0f)
| fingerprint | co-occurrences |
|---|---|
6:107+21:0:1378:mss*47,8:mss,nop,ws,nop,nop,sok:flow:0 | 1 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:153.0) Gecko/20100101 Firefox/153.0 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
DE · Germany | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS207781 · Marcel Menzel | 1 |
Cross-transport links
TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).
| fingerprint | linked observations |
|---|---|
q13d0314h3_55b375c5d22e_1ecea7cb6ec1 | 1 |