What do you do when none of the built-in MSFT Sensitive Info Types match your data? In this video, I show you where I start when building custom Sensitive Info Types(SIT) for Microsoft Purview Data Loss Prevention.
Links:
Testing Site
https://regex101.com/
MSFT Documentation
https://docs.microsoft.com/en-us/microsoft-365/compliance/create-a-custom-sensitive-information-type?view=o365-worldwide