TLS ClientHello (JA4)

t13d260900_6d1bcf7a4624_188c7f576dcd

first seen 2026-06-23 22:25 · last seen 2026-09-15 22:03 · 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

t13d260900_6d1bcf7a4624_188c7f576dcd

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

User-Agent claims Chrome 151.0.0.0

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/151.0.0.0 Safari/537.36
Claimed version	151.0.0.0
Measured versions	151.0.7922.174, 149.0.7827.103, 149.0.7827.53, 149.0.7827.115, 149.0.7827.114, 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

2026-08-03

2026-08-27

t13d260900_6d1bcf7a4624_188c7f576dcd

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

User-Agent claims Chrome 150.0.0.0

TLS cipher list matches no measured Chrome capture

Full User-Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36
Claimed version	150.0.0.0
Measured versions	151.0.7922.174, 149.0.7827.103, 149.0.7827.53, 149.0.7827.115, 149.0.7827.114, 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

2026-07-08

2026-07-22

t13d260900_6d1bcf7a4624_188c7f576dcd

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

User-Agent claims Edge 150.0.0.0

TLS cipher list matches no measured Edge capture

The offered TLS cipher suites match no controlled capture of Edge. 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/150.0.0.0 Safari/537.36 Edg/150.0.0.0
Claimed version	150.0.0.0
Measured versions	152.0.4191.66, 151.0.4129.72, 149.0.4022.98, 151.0.4129.101, 150.0.4078.65, 149.0.4022.69, 149.0.4022.52, 150.0.4078.99, 149.0.4022.80, 151.0.4129.93, 151.0.4129.59
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-07-08

2026-07-30

t13d260900_6d1bcf7a4624_188c7f576dcd

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

User-Agent claims Edge 151.0.0.0

TLS cipher list matches no measured Edge capture

Full User-Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36 Edg/151.0.0.0
Claimed version	151.0.0.0
Measured versions	152.0.4191.66, 151.0.4129.72, 149.0.4022.98, 151.0.4129.101, 150.0.4078.65, 149.0.4022.69, 149.0.4022.52, 150.0.4078.99, 149.0.4022.80, 151.0.4129.93, 151.0.4129.59
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-08-03

2026-08-27

t13d260900_6d1bcf7a4624_188c7f576dcd

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) …

User-Agent claims Edge 151.0.0.0

TLS cipher list matches no measured Edge capture

Full User-Agent	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36 Edg/151.0.0.0
Claimed version	151.0.0.0
Measured versions	152.0.4191.66, 151.0.4129.72, 149.0.4022.98, 151.0.4129.101, 150.0.4078.65, 149.0.4022.69, 149.0.4022.52, 150.0.4078.99, 149.0.4022.80, 151.0.4129.93, 151.0.4129.59
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-08-21

2026-08-26

t13d260900_6d1bcf7a4624_188c7f576dcd

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

User-Agent claims Edge 149.0.0.0

TLS cipher list matches no measured Edge capture

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 Edg/149.0.0.0
Claimed version	149.0.0.0
Measured versions	152.0.4191.66, 151.0.4129.72, 149.0.4022.98, 151.0.4129.101, 150.0.4078.65, 149.0.4022.69, 149.0.4022.52, 150.0.4078.99, 149.0.4022.80, 151.0.4129.93, 151.0.4129.59
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-07-02

2026-07-04

t13d260900_6d1bcf7a4624_188c7f576dcd

Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:147.0…

User-Agent claims Firefox 147.0

TLS cipher list matches no measured Firefox capture

The offered TLS cipher suites match no controlled capture of Firefox. 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 (X11; Ubuntu; Linux x86_64; rv:147.0) Gecko/20100101 Firefox/147.0
Claimed version	147.0
Measured versions	146.0.1, 152.0.1, 154.0, 140.0.2, 151.0.4, 151.0.2, 139.0, 153.0.1, 155.0, 152.0.5, 153.0.3, 142.0.1, 153.0.4, 152.0.6, 150.0.2, 135.0, 132.0, 152.0.3, 148.0.2, 137.0, 141.0, 155.0.1, 153.0, 151.0.3, 144.0.2, 154.0.1, 134.0, 152.0.4, 151.0
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-07-13

t13d260900_6d1bcf7a4624_188c7f576dcd

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

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, 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

2026-06-23

2026-07-01

t13d260900_6d1bcf7a4624_188c7f576dcd

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

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, 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

2026-09-10

t13d260900_6d1bcf7a4624_188c7f576dcd

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

User-Agent claims Edge 152.0.0.0

TLS cipher list matches no measured Edge capture

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 Edg/152.0.0.0
Claimed version	152.0.0.0
Measured versions	152.0.4191.66, 151.0.4129.72, 149.0.4022.98, 151.0.4129.101, 150.0.4078.65, 149.0.4022.69, 149.0.4022.52, 150.0.4078.99, 149.0.4022.80, 151.0.4129.93, 151.0.4129.59
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-08-31

2026-09-10

Last 7 days (6 observations)

Distinct clients per day (last 30 days, peak 3/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	`26`
Extension count	`9`
ALPN	`00`
Ciphers	`002f, 0033, 0035, 0039, 0067, 006b, 009c, 009d, 009e, 009f, 00ff, 1301, 1302, 1303, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030`
Extensions	`0005, 000a, 000b, 000d, 0017, 002b, 002d, 0033`
Signature algorithms	`0403, 0503, 0603, 0807, 0808, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0203, 0301, 0201, 0302, 0202, 0402, 0502, 0602`
JA4_r	`t13d260900_002f,0033,0035,0039,0067,006b,009c,009d,009e,009f,00ff,1301,1302,1303,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030_0005,000a,000b,000d,0017,002b,002d,0033_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0203,0301,0201,0302,0202,0402,0502,0602`
JA4_o (sample)	`t13d260900_bc6ddf29a19e_262f72f4fb3b`
JA4_ro (sample)	`t13d260900_1302,1303,1301,c02b,c02c,c023,c024,c009,c00a,c030,c02f,c013,c014,c027,c028,009d,009c,0035,002f,009f,009e,006b,0067,0039,0033,00ff_0000,000b,000a,0005,0017,000d,002b,002d,0033_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0203,0301,0201,0302,0202,0402,0502,0602`

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
`ge11nr13enus_695efbec79f4_000000000000_000000000000`	37
`ge11nn14enus_d9d4fb46dcb1_000000000000_000000000000`	10
`ge11nn09enus_05dc821be2d7_000000000000_000000000000`	8
`ge11nr14enus_d9d4fb46dcb1_000000000000_000000000000`	7
`ge11nr14enus_3db8af7c5dd9_000000000000_000000000000`	6
`ge11nn14enus_d644675fec09_000000000000_000000000000`	6
`ge11nr14enus_d644675fec09_000000000000_000000000000`	6
`ge11nn14enus_1375bc2175b6_000000000000_000000000000`	5
`ge11nr13enus_66beaa3271a2_000000000000_000000000000`	5
`ge11nr13enus_bfcb6716270a_000000000000_000000000000`	3

TCP SYN (p0f)

fingerprint	co-occurrences
`4:57+7:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	31
`4:53+11:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	27
`4:55+9:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	19
`4:54+10:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	13
`4:58+6:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	9
`4:52+12:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	8
`4:48+16:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	7
`4:51+13:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	6
`4:56+8:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	1
`4:59+5:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-1-3-4-8_1460_6`	121

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36`	36
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36`	24
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36 Edg/150.0.0.0`	14
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36 Edg/151.0.0.0`	9
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36 Edg/151.0.0.0`	8
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36 Edg/149.0.0.0`	7
`Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:147.0) Gecko/20100101 Firefox/147.0`	5
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36`	4
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36`	3
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36`	3

Country

fingerprint	co-occurrences
`US` · United States	55
`AT` · Austria	20
`IN` · India	13
`NL` · Netherlands	10
`HK` · Hong Kong SAR China	6
`MY` · Malaysia	5
`JP` · Japan	3
`CA` · Canada	3
`PL` · Poland	3
`IL` · Israel	3

Network (ASN)

fingerprint	co-occurrences
`AS22616` · ZSCALER, INC.	58
`AS62044` · Zscaler Switzerland GmbH	37
`AS53813` · ZSCALER, INC.	28

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprint	linked observations
`q13d0311h3_55b375c5d22e_653d80c3fe9d`	6