Security Flaw in Bluetooth Car Anti-Theft Systems Puts 2.2 Million Vehicles at Risk

• July 28, 2026

A critical security vulnerability has been identified in anti-theft and tracking systems installed by California auto dealers on approximately 2.2 million vehicles. These systems, manufactured by Acrisure under the names KARR and SWDS, can be manipulated remotely via Bluetooth, allowing unauthorized users potential control over the devices.

Bluetooth Exploit Threatens Vehicle Security

The weakness affects security systems that are widely used to prevent vehicle theft and monitor car locations. The flaw originates from the Bluetooth interface in the devices, which, if exploited, could provide attackers a pathway to override the system’s protective functionalities. This exposure raises significant concerns regarding the safety and protection of vehicles equipped with these systems.

While Bluetooth connectivity is a common feature intended to enhance user convenience and system integration, this incident highlights the risks associated with wireless interfaces in automotive security products. Intruders could leverage the gap to disable alarm systems, interfere with tracking capabilities, or potentially execute more complex unauthorized commands.

Acrisure’s KARR and SWDS models have been a part of various vehicle security installations by dealers across California, making this vulnerability widespread among consumers in that region. The exact mechanisms of the exploit, as well as whether it requires proximity to the vehicle or can be triggered remotely at distance, have not been fully detailed.

Security experts emphasize the importance of manufacturers thoroughly testing Bluetooth and other wireless components for vulnerabilities before deployment, especially in devices linked to safety and theft prevention. The incident serves as a reminder that connectivity often introduces new attack vectors that can undermine traditional automotive security measures.

At present, there is no publicly disclosed fix or update from Acrisure related to the vulnerability. Vehicle owners equipped with these anti-theft systems are advised to stay alert for announcements or patches that address the Bluetooth security issue. Meanwhile, dealers and repair professionals may need to assess the risk and consider interim protective strategies until a comprehensive resolution is available.

This development underscores the growing intersection of technology and automotive security, where advances in connectivity must be balanced with robust protections to safeguard consumers and their vehicles from cyber intrusions.

Over two million vehicles equipped with Acrisure’s Bluetooth-enabled anti-theft systems face remote hacking threats.