Detect automation around high-risk login attempts
Credential-stuffing tools can replay exposed username and password pairs at scale. The login still needs its normal authentication and account-security controls.
Request a site auditA valid password does not prove a legitimate session
Credential stuffing uses real account data, so the form submission can look valid. The useful evidence sits around the login: the client environment, the request, the session, and what happens before and after authentication.
Read the researchWhat the traffic looks like
Credential harvesting, replayed
Credentials collected through phishing, malware, or a data breach are tested against other login forms where the same password may have been reused.
One attempt, one identity
Automation can rotate addresses and browser profiles between attempts, weakening rules that depend on one repeated identifier.
A browser that passes the obvious checks
A modified browser can remove familiar automation signals, which makes any rule built around one browser property fragile.
What runs against this traffic
Browser and session evidence
In supported login flows, Centinel evaluates the client environment and request alongside the session instead of trusting the form fields alone.
The application receives evidence about how a valid-looking login was submitted. Centinel does not decide whether the credentials are stolen or whether authentication should succeed.
Read more: Browser and session evidenceA bounded login policy
Where the integration supports it, suspicious attempts can be observed, rate-limited, challenged, or blocked according to the route's policy.
Teams can add friction to risky sessions without applying the same response to every login.
Read more: A bounded login policy
Want to see what reaches your site?
Start with a free scraping audit: tested tools, exposed pages, and fixes to consider, reviewed by hand and emailed to you. This checks scraping exposure, not every abuse pattern or all production traffic. Discuss broader workflow coverage in a demo.