User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; rv:143.0) Gecko/20100101 Firefox/143.0
first seen 2026-06-19 09:27 · last seen 2026-09-08 11:13 · JSON
Decomposed attributes
| Browser / client | Firefox 143.0 |
|---|
| Operating system | Windows 10.0 |
|---|
| Device class | desktop |
|---|
| Note | inferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above |
|---|
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.
TLS ClientHello (JA4)
HTTP request (JA4H)
TCP SYN (p0f)
| fingerprint | co-occurrences |
|---|
4:115+13:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0 | 2 |
4:54+10:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0 | 2 |
4:111+17:0:1380:mss*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0 | 1 |
4:101+27:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0 | 1 |
4:108+20:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0 | 1 |
4:108+20:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0 | 1 |
4:50+14:0:1380:65535,13:mss,sok,ts,nop,ws:df,id+:0 | 1 |
4:55+9:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0 | 1 |
4:116+12:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0 | 1 |
4:58+6:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0 | 1 |
TCP SYN (JA4T)
Country
| fingerprint | co-occurrences |
|---|
JP · Japan | 7 |
US · United States | 5 |
SG · Singapore | 1 |
AT · Austria | 1 |
Network (ASN)