Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:123.0) Gecko/20100101 Firefox/123.0
first seen 2026-06-14 00:40 · last seen 2026-10-14 02:57 · JSON
Distinct clients per day (last 30 days, peak 1/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
Browser / client
Firefox 123.0
Operating system
Linux x86_64
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.
t13d3112h1_e8f1e7e78f70_b26ce05bbdd6Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.2.0, php-guzzle 8.1.0, php-guzzle 8.0.2, +12 more.The fingerprint page shows the full measured match list. More on the catalog.