Firefox Monitor



Take your stand against an industry that’s making you the product.

Firefox Monitor. See if your email has appeared in a company’s data breach. Facebook Container. Help prevent Facebook from collecting your data outside their site. Firefox Monitor is a free service provided by Mozilla, which is the same company that created the Firefox browser. Will Firefox Monitor protect me from data breaches? No one — not even Firefox — can prevent data breaches from happening. We can alert you about breaches that affect you.

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See if you’ve been involved in an online data breach.

Meet our family of privacy-first products.

Get it all on every device, without feeling trapped in a single operating system.

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  1. About Firefox Monitor Firefox Monitor warns if your online accounts were involved in a data breach. Find out if you’ve been in a data breach, get alerts about new breaches, and take steps to protect your online accounts. Firefox Monitor is provided by Mozilla.
  2. The Firefox Browser blocks most trackers automatically, so there’s no need to dig into your security settings. Firefox is for everyone Available in over 90 languages, and compatible with Windows, Mac and Linux machines, Firefox works no matter what you’re using or where you are.

Get the respect you deserve.

You’ll always get the truth from us. Everything we make and do honors our Personal Data Promise:

Take less.
Keep it safe.
No secrets.

Get the knowledge to keep you safe.

Learn everything you need to know (but don’t yet) about staying smart and safe online, from some of the world’s foremost experts.

And be part of protecting the internet for future generations.

Help us build a better Firefox for all.

Get into the open source spirit by test-driving upcoming products.

Firefox Monitor Protection

Help us keep Big Tech in check.

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We support communities all over the world standing up for a healthier internet. Add your voice to the fight.