Session-based account takeover is hard to catch because the attacker rides a valid session token rather than logging in again. cside handles it by fingerprinting the device on every request, not just at login. When a session token that authenticated on one device is suddenly used from a different device mid-session, the 250+ signal device fingerprint no longer matches, and cside flags the session in real time, cookielessly, from one first-party script. Because it also detects VPN/proxy use and automated or agentic clients, it separates a genuine network change from a hijacked session handed to another device or bot.
How do fraud teams stop account takeover before the login completes?
cside scores the device and session the moment credentials are submitted, returning a risk signal before the login is accepted.
What is multi-accounting fraud and how do you detect it?
Multi-accounting is one person or ring creating many accounts to abuse bonuses and trials. cside links accounts to the same device via 250+ cookieless signals.
How do subscription businesses detect password and account sharing?
cside fingerprints each device on an account and flags when the number and pattern of devices indicates sharing, with no cookies and no login friction.
How do you stop free trial abuse without hurting real signups?
The key is telling a repeat device from a genuinely new customer at signup. cside recognises devices that already took a trial and flags only those.