Mozilla's free breach monitoring tool, built on Have I Been Pwned's data with a friendlier interface. Adds a paid Plus tier with active data broker removal across 190+ broker sites, US-only.
Mozilla Monitor (originally called Firefox Monitor) was launched in 2018 as a free service from the Mozilla Foundation, the nonprofit behind the Firefox browser. The service uses Have I Been Pwned's breach data as its back end while wrapping that data in a friendlier user interface, account-based dashboard, and email alert system. The free tier is genuinely free with no paid upgrade pressure, and provides continuous breach monitoring for your email addresses.
In 2024 Mozilla added Monitor Plus, a paid tier ($13.99/mo or $8.99/mo annual) that performs active data broker removal across 190+ broker sites, similar to dedicated broker-removal services like DeleteMe and Incogni but at a competitive price. Plus is US-only because broker removal mechanics are US-specific. The free tier remains globally available. Mozilla's nonprofit ethos makes this one of the more trustworthy free tools, no data selling, no targeted advertising, no upsell pressure.
Two tiers. Free is globally available with continuous breach monitoring. Monitor Plus adds data broker removal for $13.99/mo or $8.99/mo on annual billing. Plus is US-only because broker removal works through US-specific data privacy laws and broker site infrastructure.
Positive sentiment. Users praise the combination of HIBP's breach data with a friendlier Mozilla-designed interface. The continuous monitoring (not just one-time scan) at zero cost is the standout feature. Plus subscribers report active broker removal that genuinely works, finding their information removed from broker sites within weeks. Mozilla's nonprofit ethos is specifically appreciated by privacy-focused users who distrust commercial ID protection brands.
Negative sentiment. The Plus US-only limitation frustrates non-US users who would gladly pay for broker removal. The absence of a mobile app feels dated. Some users want credit monitoring or restoration support that Mozilla Monitor does not offer. The Mozilla Foundation's product strategy can shift, the company has discontinued products in the past, which creates uncertainty about long-term commitment to Monitor Plus.
You want the best free breach monitoring with a friendly interface, the free tier alone is excellent. Or you are a US user who wants cheap active broker removal at $8.99/mo annual, Plus is one of the best values in that category. You appreciate Mozilla's nonprofit ethos and want to avoid commercial ID protection brands.
You want US-style $1M insurance, restoration support, or credit bureau monitoring, Mozilla Monitor does not offer these. You are outside the US and want broker removal, Plus is not available in your region. You want a mobile app, Monitor is web-only.
Mozilla Monitor is the friendliest free breach monitoring tool available. Built on HIBP data with Mozilla's design and account infrastructure, it delivers continuous monitoring at zero cost with no upsell pressure. For most casual users, this is the recommended starting point.
Plus is genuinely good value for US users. $8.99/mo annual for active broker removal across 190+ sites competes with dedicated broker removal services like DeleteMe at higher prices. If you specifically want broker removal and live in the US, Plus is one of the best deals on this list.
For comprehensive identity protection (insurance, restoration, credit monitoring), you still need a paid suite like Aura or LifeLock. Mozilla Monitor is a complement, not a replacement, for those services. But as a free starting point and as cheap broker removal, it is one of the most useful free tools available.