TLS ClientHello (JA4)

t12d240600_9295eb73ea51_1f2465c447a9

first seen 2026-07-13 12:01 · last seen 2026-07-13 12:01 · JSON

Decomposed attributes

Protocolt (TLS over TCP)
TLS version12
SNId (domain)
Cipher count24
Extension count6
ALPN00
Ciphers000a, 0013, 002f, 0032, 0035, 0038, 003c, 003d, 0040, 006a, 009c, 009d, 009e, 009f, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c
Extensions000a, 000b, 000d, 0023, ff01
Signature algorithms0401, 0501, 0201, 0403, 0503, 0203, 0202
JA4_rt12d240600_000a,0013,002f,0032,0035,0038,003c,003d,0040,006a,009c,009d,009e,009f,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c_000a,000b,000d,0023,ff01_0401,0501,0201,0403,0503,0203,0202
JA4_o (sample)t12d240600_87c2215237ae_12e500439604
JA4_ro (sample)t12d240600_c028,009f,009e,009d,009c,c02b,c023,c027,c014,c013,003d,003c,0035,002f,c02c,c024,c00a,c009,006a,0040,0038,0032,000a,0013_ff01,0000,000a,000b,000d,0023_0401,0501,0201,0403,0503,0203,0202

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
ge11nn020000_d5c75abc5c2c_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:118+10:0:1460:8192,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01

TCP SYN (JA4T)

fingerprintco-occurrences
8192_2-1-3-1-1-4_1460_81

Country

fingerprintco-occurrences
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS49870 · Alsycon B.V.1