Ring the alarm.
The vulnerabilities could be exploited with two simple steps, security researchers from Pen Test Partners, who discovered the flaw, said Friday.
The problems were found in alarm systems made by Viper and Pandora Car Alarm System, two of the largest smart car alarm makers in the world. The two brands have as many as 3 million customers between them and make high-end devices that can cost thousands. Like other smart devices, smart car alarms offer people convenience, allowing owners to find their cars from a distance and unlock their doors from their phones.