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Millions of cars could be tracked and unlocked by a hidden security flaw

medmalwarebytes_blogPublished 2026-07-23

<p class="wp-block-paragraph">A car alarm vendor&#8217;s coding mistake has left millions of vehicles vulnerable to theft and location tracking. Thanks to the way dealers sell car alarms, many affected drivers don&#8217;t even know they have one installed.</p>

<p class="wp-block-paragraph">The device is the KARR Security System, a Bluetooth-enabled aftermarket alarm built by Acrisure Protection

Indicators of compromise

Original source: https://www.malwarebytes.com/blog/bugs/2026/07/millions-of-cars-could-be-tracked-and-unlocked-by-a-hidden-security-flaw