This rule detects changes in user privilege levels on Cisco ASA devices, which is critical as adversaries often seek to escalate privileges to gain elevated access to network infrastructure. Privilege levels on Cisco ASA range from 0 (lowest) to 15 (highest), with level 15 granting full administrative access. This detection utilizes message ID 502103, generated whenever a user's privilege level is modified, capturing both the old and new levels along with the username and administrator responsible for the change. Unusual privilege escalations, particularly those rising to level 15 outside standard business hours or by non-administrative user accounts, warrant investigation. Valid changes can stem from legitimate role changes or maintenance events, thus necessitating cross-referencing with change management records.