TCP SYN (JA4T)

65535_2-1-3-1-1-1-1-1-1-1-1-1-1-1-1-4-0-0_1460_5

first seen 2026-08-07 12:43 · last seen 2026-08-07 12:43 · JSON

Decomposed attributes

TCP window65535
Option kinds2-1-3-1-1-1-1-1-1-1-1-1-1-1-1-4-0-0
MSS1460
Window scale5

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
t13d2014h2_a09f3c656075_e42f34c56612 Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.5, urlsession 6.1.2, +1 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr09engb_538441e4e116_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;3:100;4:2097152;9:1|10420225|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.5, safari 26.4, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:51+13:0:1460:65535,5:mss,nop,ws,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,sok,eol+1:df:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.7.6 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
CH · Switzerland1

Network (ASN)

fingerprintco-occurrences
AS6730 · Sunrise GmbH1

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).

fingerprintlinked observations
q13d0311h3_55b375c5d22e_f2a83c8e78ae1