TLS ClientHello (JA4)

t13d0516h2_e133e205ac38_d8a2da3f94cd

first seen 2026-07-22 19:28 · last seen 2026-07-22 19:40 · JSON

Inconsistencies

User-Agents observed with this fingerprint that contradict what it proves at the wire. all inconsistencies →

fingerprint User-Agent claims wire shows confidence seen first seen last seen

t13d0516h2_e133e205ac38_d8a2da3f94cd

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleW…

User-Agent claims Chrome 149.0.0.0

TLS cipher list matches no measured Chrome capture

The offered TLS cipher suites match no controlled capture of Chrome. Cipher lists are very stable per browser, so a different one is a real inconsistency — though a TLS-inspecting proxy re-originating the handshake is an honest cause, which holds this at medium.

Full User-Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36
Claimed version	149.0.0.0
Measured versions	151.0.7922.174, 149.0.7827.103, 149.0.7827.53, 149.0.7827.115, 149.0.7827.114, 153.0.8010.47, 149.0.7827.54, 149.0.7827.201, 150.0.7871.187, 153.0.8010.36, 151.0.7922.170, 152.0.7977.83, 152.0.7977.82, 152.0.7977.65, 150.0.7871.114, 150.0.7871.115, 150.0.7871.129, 151.0.7922.72, 151.0.7922.137, 152.0.7977.75, 151.0.7922.173, 149.0.7827.102, 149.0.7827.156, 151.0.7922.71, 150.0.7871.128, 151.0.7922.108, 149.0.7827.155, 150.0.7871.125, 150.0.7871.46, 151.0.7922.109, 152.0.7977.64, 148.0.7778.179, 149.0.7827.200
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-07-22

Decomposed attributes

Protocol	`t (TLS over TCP)`
TLS version	`13`
SNI	`d (domain)`
Cipher count	`5`
Extension count	`16`
ALPN	`h2`
Ciphers	`1301, 1302, 1303, c02b, c02f`
Extensions	`0005, 000a, 000b, 000d, 0012, 0017, 001b, 0023, 002b, 002d, 0033, 44cd, fe0d, ff01`
Signature algorithms	`0403, 0804, 0401, 0503, 0805, 0501, 0806, 0601`
JA4_r	`t13d0516h2_1301,1302,1303,c02b,c02f_0005,000a,000b,000d,0012,0017,001b,0023,002b,002d,0033,44cd,fe0d,ff01_0403,0804,0401,0503,0805,0501,0806,0601`
JA4_o (sample)	`t13d0516h2_e133e205ac38_c1b3d96a12af`
JA4_ro (sample)	`t13d0516h2_1301,1302,1303,c02b,c02f_0012,0017,0010,44cd,fe0d,001b,000d,002b,0000,0005,ff01,000b,0023,0033,002d,000a_0403,0804,0401,0503,0805,0501,0806,0601`

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)

fingerprint	co-occurrences
`ge20nn13enus_0c2c1d640f3e_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: chrome 151.0.7922.137, chrome 151.0.7922.170, chrome 151.0.7922.108, +23 more.The fingerprint page shows the full measured match list. More on the catalog.	3

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`1:65536;2:0;4:6291456;6:262144\|15663105\|1:1:0:256\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +43 more.The fingerprint page shows the full measured match list. More on the catalog.	3

TCP SYN (p0f)

fingerprint	co-occurrences
`4:117+11:0:1300:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0`	3

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-1-3-1-1-4_1300_8`	3

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36`	3

Country

fingerprint	co-occurrences
`US` · United States	3

Network (ASN)

fingerprint	co-occurrences
`AS40222` · Credit One Bank	3