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.
Blog / Detection
Detection
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.
Impossible travel detection: reading the device behind the location
Impossible travel detection flags an account logging in from two far-apart places. Why velocity alone over-fires on VPNs, and how the device fixes it.
Account takeover detection for web apps: the signal layer at login
How to detect account takeover at login: the device and network signals that flag a suspicious login, why MFA alone misses them, and where the gap is.
How to detect VPNs in 2026
How to detect VPNs in 2026: the methods that actually work, why an IP check alone fails, and how masked traffic ties to abuse and risk.
Residential proxy detection: why home IPs are the hardest to catch, and how detection actually works
What a residential proxy is, where the home IPs come from, and how residential proxy detection works without relying on the address itself.
How to detect account sharing?
Detect account sharing with device intelligence, login activity and automatic detections. Review device history and account for legitimate multi-device use.
Proxy detection for fraud prevention: how to identify hidden traffic sources
How proxy detection works for fraud prevention: 13 techniques, why residential proxies are hard to spot, and why an IP check alone is never enough.
How to detect anti-detect browsers in 2026
Anti-detect browsers fake a new device per profile to power multi-accounting. How to detect them: the signals that expose them and why no one check is enough.