petri[.]com/microsoft-defender-for-individuals-identity-theft-monitoring/
This only applies if you're subscribed to Microsoft's Office 365 / Microsoft 365 and using Defender rather than 3rd party security software and are in the US.
Defender for Individuals came out in June: petri[.]com/microsoft-defender-for-individuals-available-desktop-mobile/ .
“Identity theft monitoring addresses one of the biggest challenges in preventing identity theft: visibility. We’ve partnered with Experian® to leverage their powerful identity monitoring technology to detect, track, and alert you whenever we find any identity information on the internet, the dark web, and less common sources like file sharing, chat rooms and many other places,” Microsoft explained.In Microsoft Defender, the identity theft monitoring feature can help users track and monitor up to 64 types of identity details for each security breach. These include email addresses, passwords, social security numbers, residential addresses, national IDs, passport numbers, bank account details, credit card details, and more. The feature can be used by parents who have set up a Family profile to manage breaches for all family members.