A free, 60-second look at what the outside world can see about you. Nothing is stored. Nothing is sold.
Here's what this check does:
Scans the connection you're on right now. We knock on about 60 common doors (ports) at the address you're visiting from, and only that address. There's no way to point this tool at someone else.
Looks up public records about that address. Has it shown up on public abuse reports? What name does it give out?
Runs a few tests in your browser. Things any website can observe: a rough location from your address, browser details, and whether your browser leaks your local address.
Optional: checks a password you type. It gets hashed in your browser, and only the first 5 characters of that hash go to a public breach database. The password itself never leaves your machine.
What we never do:
We don't store your results, your address, or anything you type. The report lives only in your browser tab.
We can't see the inside of your computer. This checks the outside only, and the results will say so plainly.
We don't ask for your name, your email, or an account.
Clicking the button gives us permission to scan the connection you're using right now, nothing more. Rate limited: a few scans per minute, per address.
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Scanning your connection…
Your address
…
Address type
…
Reverse name
…
Scan time
…
Your external posture
1. Your doors …
2. Your address's reputation …
3. What this website can see about you …
4. Password check (optional) optional
Type a password to check it against known breaches. It never leaves your browser. Only the first 5 characters of its one-way hash are sent.
No password is checked until you click.
5. Email breach check (optional) optional
Check whether an email address has appeared in known data breaches. Uses the Have I Been Pwned public API. Nothing is stored.
No email is checked until you click.
6. Browser hygiene …
7. The deeper checks opted in
You agreed to these, so here they are. Everything in this section was computed in your browser.
What this scan cannot see
Everything above, a website figured out about you in under a minute, from the outside, with your permission.
Malware and attackers don't ask, and they don't stop at the front door. This scan watched your doorstep.
Our agent watches the inside of the house, and that's the part no website can see.
Learn about the Sentry North agent →