The Security Log in /admin | Logs | Security Log is an extension of the Microsoft Security Event Log which TPAM exposes to a Sys-Admin user via the /admin interface.
The nine different Category’s in the TPAM Security Event Logs are exactly those provided by Microsoft’s Security Event Log. However, TPAM is a hardened appliance and as such, some feature are disabled / not applicable, or are not available via the TPAM web interface / CLI (for example modifying the firewall / domain controller validation / Kerberos etc) - hence some Category’s may never be populated with data, but they are all exposed should an Microsoft event ever be recorded.
Therefore, the “Category” explanation is already documented by Microsoft.
Detailed information can be found on the Microsoft website: