Free domain breach checker
Is your domain exposed in a data breach?
Enter your company domain to see breach exposure, leaked credentials, malware-log infections and dark web activity tied to it — and how to lock it down before attackers act.
Enter a company domain to see breach exposure, leaked credentials and dark web activity tied to it. We never store what you check.
How it works
Enter your domain
We check it against public breaches, infostealer logs and dark web sources.
See your exposure
Compromised employees and users, dark web mentions and an overall severity rating.
Take action
Force resets on exposed accounts, enable MFA, and monitor your domain continuously.
Why domain breach exposure matters
When employees reuse work credentials on third-party services that get breached — or get infected by infostealer malware — those logins surface in breach dumps and dark web markets. Attackers buy them to walk straight into your email, VPN and cloud apps via credential stuffing and account takeover.
A one-off check is a good start, but exposure happens continuously. HookPhish data breach and dark web monitoring track your whole domain around the clock and alert you the moment new credentials leak, with guided steps to contain it.
Related solutions & tools
Frequently asked questions
Is the domain breach checker free?+
Yes. Checking your domain's exposure is free and we never store the domains you check.
What data does it check?+
It aggregates public breach databases, infostealer (malware) logs and dark web sources to show compromised employees and users, dark web mentions, malicious ASNs and an overall severity rating for your domain.
What should I do if my domain is exposed?+
Force password resets on affected accounts, enable multi-factor authentication, review devices flagged in malware logs, and turn on continuous monitoring so you're alerted to future leaks.
How can I monitor exposure continuously?+
HookPhish data breach monitoring and dark web monitoring watch your domain around the clock and alert you to new exposure. Book a demo to set it up.
Security training designed for people. Built for enterprise.
Learn how HookPhish can effortlessly transform your security program and reduce your human cyber-risk.
Fill out the form to schedule a 30-minute chat with a product expert. We'll discuss the challenges you want to solve, walk through HookPhish, and answer any questions.
- A 30-minute call — no obligation, no pressure
- We reply within one business day
- See simulation, training, risk scoring and monitoring in one platform
Book a personalized demo
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