TLS ClientHello (JA4)

t13d1812h1_85036bcba153_b26ce05bbdd6

first seen 2026-06-11 10:32 · last seen 2026-09-16 17:27 · 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

t13d1812h1_85036bcba153_b26ce05bbdd6

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

User-Agent claims Chrome 152.0.0.0

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/152.0.0.0 Safari/537.36
Claimed version	152.0.0.0
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

2026-09-13

2026-09-14

Last 7 days (75 observations)

Distinct clients per day (last 30 days, peak 13/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

Protocol	`t (TLS over TCP)`
TLS version	`13`
SNI	`d (domain)`
Cipher count	`18`
Extension count	`12`
ALPN	`h1`
Ciphers	`0067, 006b, 009e, 009f, 00ff, 1301, 1302, 1303, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`000a, 000b, 000d, 0015, 0016, 0017, 002b, 002d, 0031, 0033`
Signature algorithms	`0403, 0503, 0603, 0807, 0808, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301, 0302, 0402, 0502, 0602`
JA4_r	`t13d1812h1_0067,006b,009e,009f,00ff,1301,1302,1303,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9_000a,000b,000d,0015,0016,0017,002b,002d,0031,0033_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602`
JA4_o (sample)	`t13d1812h1_a2fb288ce784_cad92ccb4254`
JA4_ro (sample)	`t13d1812h1_1302,1303,1301,c02c,c030,c02b,c02f,cca9,cca8,c024,c028,c023,c027,009f,009e,006b,0067,00ff_0000,000b,000a,0010,0016,0017,0031,000d,002b,002d,0033,0015_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602`

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
`ge11nn07enus_6f5b1826d533_000000000000_000000000000`	242
`ge11nn050000_b223a0ebb0b5_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.	191
`ge11nn040000_608e01151bf4_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.	40
`ge11nr07enus_6f5b1826d533_000000000000_000000000000`	21
`ge11nn06enus_fb4afd1f380a_000000000000_000000000000`	20
`ge11nr07enus_313799b1302d_000000000000_000000000000`	20
`he11nn050000_b223a0ebb0b5_000000000000_000000000000`	12
`ge11nn16enus_ec94e3fa46ec_000000000000_000000000000`	9
`ge11nn06en00_692bb916e76d_000000000000_000000000000`	8
`ge11nr07zhcn_313799b1302d_000000000000_000000000000`	8

TCP SYN (p0f)

fingerprint	co-occurrences
`4:106+22:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0`	140
`4:116+12:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0`	58
`4:120+8:0:8960:mss*7,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0`	52
`4:118+10:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0`	43
`4:120+8:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0`	27
`4:117+11:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0`	22
`4:120+8:0:1400:8192,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0`	21
`4:104+24:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0`	16
`4:42+22:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	12
`4:43+21:0:1440:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	10

TCP SYN (JA4T)

fingerprint	co-occurrences
`62720_2-1-3-1-1-4_1460_8`	210
`64240_2-1-3-1-1-4_1460_8`	106
`62720_2-1-3-1-1-4_8960_8`	52
`64240_2-4-8-1-3_1460_7`	47
`64240_2-4-8-1-3_1440_10`	31
`8192_2-1-3-1-1-4_1400_8`	30
`64240_2-1-3-1-1-4_1360_8`	17
`65535_2-1-3-1-1-4_1440_8`	14
`64240_2-4-8-1-3_1436_10`	10
`64240_2-1-3-1-1-4_1400_8`	8

User-Agent

fingerprint	co-occurrences
`python-requests/2.34.2`	42
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36`	34
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Safari/605.1.15`	27
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0`	23
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0`	21
`Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.1`	21
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36`	18
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36`	17
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36`	14
`Mozilla/5.0 (compatible; bot)`	12

Country

fingerprint	co-occurrences
`US` · United States	143
`AE` · United Arab Emirates	140
`DE` · Germany	96
`SG` · Singapore	85
`JP` · Japan	60
`CN` · China	31
`HK` · Hong Kong SAR China	18
`NL` · Netherlands	10
`IL` · Israel	10
`GB` · United Kingdom	8

Network (ASN)

fingerprint	co-occurrences
`AS31898` · Oracle Corporation	262
`AS209946` · ALINDA LLC	76
`AS8075` · Microsoft Corporation	45
`AS53667` · FranTech Solutions	36
`AS9808` · China Mobile Communications Group Co., Ltd.	27
`AS24940` · Hetzner Online GmbH	19
`AS36352` · HostPapa	10
`AS396356` · Latitude.sh	10
`AS45753` · Netsec Limited	9
`AS215930` · CIPHER OPERATIONS DOO BEOGRAD - NOVI BEOGRAD	8