Ergo, we don't know how this particular system was vulnerable to intrusion just yet. At least the fix wasn't onerous: City personnel identified a "limited breach" of the Computer Aided Dispatch (CAD) that automatically routes emergency requests to dispatchers, and the department switched it to manual mode while the affected server was isolated and taken offline. The CAD system was fully restored by 2AM Sunday.
While it's not an incident on the level of breaking into law enforcement arrest records, hacking a dispatch system compromises crucial civil infrastructure. An FBI spokesman told The Baltimore Sun that the agency was aware of the CAD breach and provided technical assistance.