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Mozilla Monitor vs Identity Guard: catalog facts
Mozilla Monitor	Identity Guard
Free Data breach monitoring and alerts are free.	Paid Subscription only; family plans start at $12.50.
Web	Web
Free breach scan by email address Ongoing alerts for new breaches	Monitors SSN, driver's license and financial accounts Credit monitoring and bank account alerts
Data broker removal service has been discontinued Only covers breaches that are publicly known	No free tier Built around US identifiers such as the Social Security number
Web application	Hosted service
Open source	Closed source
License: MPL-2.0	License not stated
Not stated if an account is needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.