TLS ClientHello (JA4)

t13d101100_01be160bb49b_36bf25f296df

first seen 2026-06-29 23:31 · last seen 2026-09-01 00:59 · JSON

Decomposed attributes

Protocolt (TLS over TCP)
TLS version13
SNId (domain)
Cipher count10
Extension count11
ALPN00
Ciphers1301, 1302, c023, c024, c027, c028, c02b, c02c, c02f, c030
Extensions000a, 000b, 000d, 0017, 0023, 002b, 002d, 0031, 0033, ff01
Signature algorithms0804, 0805, 0806, 0401, 0501, 0201, 0403, 0503, 0203, 0202, 0601, 0603
JA4_rt13d101100_1301,1302,c023,c024,c027,c028,c02b,c02c,c02f,c030_000a,000b,000d,0017,0023,002b,002d,0031,0033,ff01_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603
JA4_o (sample)t13d101100_8d8759d5f363_05ede352cda5
JA4_ro (sample)t13d101100_1302,1301,c02c,c02b,c030,c02f,c024,c023,c028,c027_0000,002b,000d,0023,000a,000b,0033,0031,0017,ff01,002d_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_b0d6a43aa599_000000000000_0000000000002
ge11nn12enus_2fc2d790e0fd_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:113+15:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:108+20:0:1440:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1440_82
65535_2-1-3-1-1-4_1440_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.74 Safari/537.36 Edg/79.0.309.432
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36 Edg/149.0.0.01

Country

fingerprintco-occurrences
US · United States2
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation3