USER ALERT SYSTEMS, APPARATUS, AND RELATED METHODS FOR USE WITH VEHICLES

User alert systems, apparatus, and related methods for use with vehicles are disclosed. A disclosed alert system for a vehicle includes an intrusion detection system (IDS) operatively coupled to the vehicle. The alert system also includes a network access device (NAD) operatively coupled to the vehicle and control circuitry configured to detect, via the IDS, a malicious message transmitted through a controller area network (CAN) bus of the vehicle. The control circuitry is also configured to generate a primary alert indicative of the malicious message and transmit, via the NAD, the primary alert to a primary user device corresponding to a driver of the vehicle. The control circuitry is also configured to generate a secondary alert indicative of the malicious message and transmit, via the NAD, the secondary alert to one or more secondary user devices different from the primary user device.