Block credential stuffing, without ever blocking a real user.
The known leaks hold over 11 billion username-password pairs. Attackers don't guess anymore - they replay the lists. Vinishu spots velocity and posture before a single attempt reaches a password.
How a stuffing attack plays out.
A leaked cred list, a residential proxy pool, a cheap script. One in a hundred gets through - the whole business rests on that. Vinishu pushes it down to one in a million.
Detect intent. Block the request. Let real users through.
Handle it before it happens.
Vinishu decides the moment the request arrives, not later, after the fact. That stops attacks before they start.
No guesswork.
Vinishu answers with valid and score, not a cloud of hints you have to weigh up yourself. You set the threshold once, in your route.
Effort only for attackers.
Borderline cases get a computational challenge or a delayed response - invisible to humans, expensive for scripts. No CAPTCHA, no MFA spam, no support tickets.
A single verify call. Decision in 8–10 ms.
You call the SDK from your auth API. We made the decision long before that. The reverse proxy will do the same further up once it is live - same decision, different integration.
Questions security teams actually ask.
Missing a question? Ask a developer.
Does this replace 2FA?
No, 2FA can't be replaced. A stolen password typed in by hand isn't something we can stop either. The user's identity should still be confirmed properly.
Can I rely on Vinishu?
Yes - you can. Vinishu is built to stay up and made exactly for your use case. You look up every decision by fingerprint_id and session_id in the dashboard.
Do you store passwords?
Never. Vinishu sees request metadata - TLS posture, cadence, headers, optionally the email for per-account velocity. The password never leaves your stack.
Are there false positives on legitimate spikes?
We learn the baseline per tenant. A 10× spike is read as a shifted baseline, not an attack. For planned events you can raise the score threshold per route.
Are results available to me?
Yes, every decision is available via dashboard and API.
Try it first,
enforce only after.
Ready to trade CAPTCHAs for invisible protection?
Get in touch, no strings attached. We'll give you honest, no-pressure advice - then see the value for yourself in a risk-free two-week pilot, with a traffic analysis at the end.