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Free tool

Check your domain security

We rate your domain across five areas of security. We email the link to your results to your work address, and the check itself takes a minute at most.

Use an address at the same domain, so the results only reach someone at your company.

We send the rating without the second consent too. You can withdraw either consent at any time. Details are in our Privacy Policy.

  • Nothing to install
  • Public data only
  • Results go only to you

What we check

The same areas that Guardiso monitors for its customers every day.

Email and DNS

Can someone send an email that looks like it came from your company?

Encryption and certificate

Does your website encrypt connections with a current protocol and a valid certificate?

Website protection

Does your website protect visitors against common browser attacks?

Reputation and threats

Is your domain or server on any spam or fraud warning lists?

Look-alike domains and subdomains

Has anyone registered a look-alike domain, and do you have forgotten subdomains?

Data breaches

Have company email addresses appeared in known data breaches?

We show this area in the full report.

How it works

  1. Enter your domain and work email address.
  2. Click the button in the message we send you.
  3. See your rating in five areas and the two things worth fixing first.

Common questions

Can the check break anything on my website?

No. We only look at what your website and server show to every visitor.

Can I check another company's domain?

No. We only send the result to an address at the domain being checked.

How much does it cost?

The rating is free. The full report with fixing instructions comes with the Starter plan.

Check your domain security.

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