Glossary

Definitions of the technical terms you'll see in Veritus.

ASN (Autonomous System Number)

A globally unique number identifying a network operator on the internet. AWS is ASN 16509, Google is 15169. Used to detect datacentre IPs.

CIDR (Classless Inter-Domain Routing)

A way of writing IP address ranges. 3.0.0.0/8 means "all 16.7 million IPs starting with 3.x.x.x". Used in rule patterns.

DKIM, DMARC, SPF

Email authentication standards. Veritus emails are DKIM-signed for deliverability and SPF-aligned. Not directly relevant to fraud scoring but explains why our verify emails actually land.

HIBP (Have I Been Pwned)

Troy Hunt's public database of breached credentials. ~12 billion known-breached passwords. Veritus uses HIBP's k-anonymity range API to check passwords without ever sending them in plaintext.

Honeypot field

A hidden form field designed to be filled in by bots (which fill every field) but not humans (who don't see it). If our hidden _vt_hp field has a value, we mark the signup as bot.

MaxMind GeoLite2

The free version of MaxMind's commercial IP-to-location and IP-to-ASN databases. Two files (City + ASN) loaded into Veritus memory at startup; refreshed weekly. Powers all our IP-based reasons.

P95, P99

"95th percentile" — the value below which 95% of measurements fall. If Veritus's P95 latency is 480ms, 95% of requests complete in under 480ms and 5% take longer.

Score

Veritus's 0–100 fraud probability. Higher = more suspicious. Sum of triggered reason weights, capped at 100.

Tor exit node

The last hop in a Tor circuit; the IP your target site sees. Tor itself isn't fraud, but the overwhelming majority of Tor-exit signups to commercial services are abusive. We hard-block by default; allow via rule if your use case is different.

UUID

128-bit globally unique identifier. Veritus uses UUIDs for forms, API keys, and check IDs — safe to expose in URLs because they're unguessable.

Verdict

The decision Veritus returns: allow, review, or block. Derived from the score against your form's thresholds.

Webhook

A URL Veritus POSTs to when something interesting happens (verdict override, score change after rule edit, etc.). Coming in a future release.