User-Agent
Mozilla/5.0 (Windows NT 10.0; rv:128.0) Gecko/20100101 Firefox/128.0
first seen 2026-07-12 16:13 · last seen 2026-07-12 16:13 · JSON
Decomposed attributes
| Browser / client | Firefox 128.0 |
|---|
| 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)
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 155.0.1, +32 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:42|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (p0f)
| fingerprint | co-occurrences |
|---|
4:43+21:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0 | 2 |
4:42+22:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0 | 1 |
TCP SYN (JA4T)
QUIC transport params
Country
| fingerprint | co-occurrences |
|---|
IL · Israel | 5 |
Network (ASN)
| fingerprint | co-occurrences |
|---|
AS8551 · Bezeq International Ltd. | 5 |
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).