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Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Why does Monitor show me in a data breach for a site I never signed up to?

Why does Monitor show me in a data breach for a site I never signed up to?

Sometimes a website you don’t recognize can show up in Monitor. Here are several reasons why this can happen, along with steps to protect yourself.

Manage your Monitor notifications

Manage your Monitor notifications

Monitor helps you stay informed about data breaches and data broker sites through your notification settings. You can control the updates you receive to ensure they are relevant to your needs.

What to do after a data breach

What to do after a data breach

Learn what to do after Mozilla Monitor notifies you about a data breach, so that you can protect your accounts and limit any damage.

Monitor Plus has shut down – what you need to know

Monitor Plus has shut down – what you need to know

Learn what happens when Mozilla Monitor Plus shuts down, how refunds work, and what data will be deleted.

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