Engineers & Fraud Ops: Reduce False Positives with 0–100 Proxy Scores
Implementation focused proxy detection for engineers and fraud teams: APIs, caching, TLS fingerprints, and a 0–100 confidence model to cut false positives.
Blog / Anonymous traffic
Anonymous traffic
Start Visitor Identification in 5 Minutes — Validate with 5,000 Live IDs
Practical playbook for fraud and product teams to deploy visitor identification: prioritized engineering checks, monitoring rules, and vendor-evaluation...
Returning visitor conversion: recognizing the returning shopper to capture the lift
Returning visitors convert far better than first-timers, but logged-out shoppers look new. Recognizing the returning device captures the conversion lift.
Personalization for anonymous visitors: recognizing returning visitors without a login
How to personalize for returning visitors who are not logged in, by recognizing their device with a durable identifier that holds without cookies.
Persistent carts and preferences: keeping state for logged-out returning visitors
How to keep a returning visitor's cart and preferences across sessions without a login, by recognizing the device with a durable identifier.
New vs returning visitors: what a good ratio is, and why the number is only as good as your cookies
What a good new vs returning visitor ratio is, why the cookie-based count in analytics is wrong, and how returning visitors are recognized without cookies.
How to detect click farms
What a click farm is, how phone farms mass-produce fake installs, signups, and clicks, and how the devices behind that activity cluster back to one operation.
How to detect invalid traffic (IVT): types, causes, and signals
How to detect invalid traffic (IVT): the GIVT vs SIVT split, what causes it, and the signals advertisers use to catch the traffic draining ad budgets.
How website visitors are counted: Google Analytics, Vercel, and ShieldLabs compared
Why your visitor counts never match across tools. How Google Analytics, Vercel, and ShieldLabs each identify a visitor, and which count is closest to the truth.
How to detect ad fraud: types, cost, and the signals that catch it
How to detect ad fraud: the fake clicks, impressions, installs, and leads that drain ad budgets, what each type costs, and the signals that catch them.
How to detect geolocation spoofing and prevent fraud
How to detect geolocation spoofing: how it works, why a single IP check fails, and how layered signals expose the mismatch so your team can prevent fraud.
How to identify anonymous traffic and visitors
How to identify anonymous traffic and recognize returning visitors hidden behind VPNs, proxies, Tor, Private Relay, and anti-detect browsers.
How to detect Tor traffic without blocking real users
Detecting Tor traffic is easy because exit nodes are public. The hard part is acting on it without blocking real users. How web detection actually works.