Yes, and that is the core of device-based ATO detection. Because cside identifies the device from 250+ per-session signals rather than a cookie, it knows whether the device behind a login has been seen on that account before. A first-seen device on an established account, especially paired with a VPN or residential proxy, an emulator, or a headless browser, is exactly what takeover looks like, and cside returns that risk signal as credentials are submitted, so you can challenge with MFA, block, or review before the login is accepted.
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.