Free tool

What can an attacker
already see about you?

Type your domain and this checks three things in about six seconds: whether someone can send email as you, what of yours is exposed to the internet, and whether your domain itself can be tampered with. Nothing private, nothing to sign up for.

A domain name is public information — it is already on your van and your business cards. Everything checked here is a public record that anyone in the world can look up about you right now, which is exactly why it is worth knowing what they find. Nothing is sent to us and nothing is stored.

Or try one:

Why the email part matters most

Nobody hacks you. They just use your name.

  1. They email your customer with your business name and your address in the From line. Writing that takes seconds and needs no access to anything of yours.

  2. Your customer’s mail server checks your settings to see whether it should refuse the message. If you have not set the rule, there is nothing to check.

  3. It lands in the inbox looking normal. Usually an invoice with different bank details. Your customer pays it, and they blame you — your computers were never touched.

Everything this page did was a public lookup, run from your browser, on a domain you own. You can reproduce all of it from a terminal with dig. This site runs no analytics, so nothing you typed here was recorded anywhere.

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We’ll lock it down with you.

Email records, account logins, two-factor, backups, and what actually happens on the day something gets through — gone through with you, in plain language, usually in a single session.