// vendor intelligence
what fastly (signal sciences) detects
fastly (signal sciences) is a edge-waf vendor. it declares strong tls / network fingerprint (2/3), strong ip reputation (2/3), strong server coherence (2/3), partial challenge (1/3) capability. below: the layers it enforces and the cookie, endpoint, and header tells it leaves.
enforced detection layers
| detection layer | capability | what it covers |
|---|---|---|
| tls / network fingerprint | 2/3 strong | the ja3/ja4 clienthello and http/2 settings signature the edge reads before any javascript runs. |
| ip reputation | 2/3 strong | asn, proxy-class, and abuse-history scoring of the connecting address. |
| js fingerprint | unaddressed | canvas, webgl, navigator, font, and audio signals collected in-page. |
| behavioral | unaddressed | mouse, keyboard, and timing biometrics read from interaction cadence. |
| challenge | 1/3 partial | interactive or invisible captcha and proof-of-work gates. |
| attestation | unaddressed | hardware or os-backed integrity checks (webauthn, play integrity, device attestation). |
| server coherence | 2/3 strong | cross-checking headers, tls, ip, and js for internal consistency. |
unaddressed means this tool type does not operate at that layer, so it is not a failing score. a red 0/3 is a real, declared score of zero. both are declared capability, not live pass-rates.
tells
- endpoints
- inline agent/module at the origin or the fastly edge (no client js)
- header tells
- x-sigsci-, signal sciences
fastly next-gen waf (ex-signal sciences): a server-side agent/module inspects requests and rate-tiers attack/anomaly signals inline; largely request-side, so no browser fingerprint sdk. the tls/header/ip coherence is the read.
questions
- what does fastly (signal sciences) detect?
- it declares strong tls / network fingerprint (2/3), strong ip reputation (2/3), strong server coherence (2/3), partial challenge (1/3) capability. layers not listed are not enforced by fastly (signal sciences).
- what are fastly (signal sciences)'s tells?
- header/script tells: x-sigsci-, signal sciences. endpoints: inline agent/module at the origin or the fastly edge (no client js).
other vendors
where to go from here
layer intensities are catalog-declared (0..3), speculative, and the catalog carries no capture date for this record. layer definitions in the glossary.