TLS ClientHello (JA4)

t12d080700_0df93f53a2f9_2dae41c691ec

first seen 2026-06-19 19:15 · last seen 2026-08-14 14:36 · JSON

Decomposed attributes

Protocolt (TLS over TCP)
TLS version12
SNId (domain)
Cipher count8
Extension count7
ALPN00
Ciphersc023, c024, c027, c028, c02b, c02c, c02f, c030
Extensions000a, 000b, 000d, 0017, 0023, ff01
Signature algorithms0804, 0805, 0806, 0401, 0501, 0201, 0403, 0503, 0203, 0202, 0601, 0603
JA4_rt12d080700_c023,c024,c027,c028,c02b,c02c,c02f,c030_000a,000b,000d,0017,0023,ff01_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603
JA4_o (sample)t12d080700_76cc2b550ef6_e7395bd2f4a9
JA4_ro (sample)t12d080700_c030,c02f,c028,c027,c02c,c02b,c024,c023_0000,000a,000b,000d,0023,0017,ff01_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603

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.

HTTP request (JA4H)

fingerprintco-occurrences
he11nn030000_44b0325fbcb5_000000000000_0000000000004
ge11nn06en00_827c3ac6a18a_000000000000_0000000000003
ge11nn040000_cf1edba2959c_000000000000_0000000000001
ge11nn05en00_e9a7986301bf_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:114+14:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:04
4:112+16:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:108+20:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:109+19:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-1-3-1-1-4_1340_87

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 6.1; WOW64) SkypeUriPreview Preview/0.5 skype-url-preview@microsoft.com4
Mozilla/5.0 (Windows NT 10.0; Win64; rv:143.0) Gecko/20100101 Firefox/143.01

Country

fingerprintco-occurrences
US · United States7
JP · Japan2

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation8
AS63949 · Akamai Connected Cloud1