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