Stop credential stuffing
Block brute-force and stolen-credential attempts
Account Takeover
Stop credential stuffing before it reaches a real account.
What you get
Earn customer trust
Flag suspicious logins, protect real customers
Reduce financial losses
Stop unauthorized transactions before they clear
Protect user data
Prevent theft, stay compliant by design
How visitor ID decides
One visitor ID is enough to tell a returning customer from a credential-stuffing attempt — even when the password is correct.
Same login, unfamiliar visitor ID
Visitor ID
vis_9c2f4a7e1d3b8c05
Stable across sessions, networks, and identity changes.
STEP UPDecision
Credentials match — device continuity does not. Challenge before takeover succeeds.
01
Known customer device
vis_a91… — 47 prior logins
02
Stolen credentials used
Password matches account
03
This session’s visitor ID
First seen · never linked to this account
Signals that matter here
IP Geolocation
Spot logins from unfamiliar locations
VPN Detection
Flag concealed identity or location
Incognito Detection
Catch privacy-mode evasion attempts
Device Continuity
Recognize the same hardware across sessions
Risk Score & Reason Codes
Explainable, traceable decisions your team can defend
Example verify response
{
"vis_id": "vis_9c2f4a7e1d3b8c05",
"risk_score": 13,
"action": "allow",
"reason": [
"known_device",
"consistent_geo"
],
"global_risk_score": 9,
"geolocation": {
"city": "Nairobi",
"country": "KE"
},
"device_continuity": {
"first_seen": "2026-06-27",
"visits": 21
}
}