SSO with new operating system

Synopsis

Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	Requires one of the following data sources: AzureAD OR Okta
Detection Modules	Identity Analytics
ATT&CK Tactic	Initial Access (TA0001)
ATT&CK Technique	Valid Accounts: Domain Accounts (T1078.002)
Severity	Informational

A user successfully authenticated via SSO with a new operating system.

Use a legitimate user and authenticate via an SSO service to gain access to the network.

Confirm that the activity is benign (e.g. the user has really moved to a new operating system).
Follow actions and suspicious activities regarding the user.