ShieldLabs is fraud detection and prevention with traffic quality scoring. It detects users running multiple accounts, account sharing and takeovers under any masking, so you prevent losses from free-trial, bonus, promo and API abuse. One JavaScript snippet collects more than 100 device and network signals and returns a risk score with named risk signals such as VPN, proxy, Tor and anti-detect browsers through the API and webhooks. Free plan with 5,000 identifications.