A Tesla Model Y owner's digital convenience pursuit turns sour when thieves remotely unlock the car using a compromised API token, highlighting security risks in connected vehicles.

Ever since cars became more than just transportation, tinkering with them has been a part of car culture. But in the age of electric vehicles and smart mobility, tweaking your ride means diving into digital realms – APIs, smart home integrations, and app-based automations. However, this digital convenience can come with real-world risks, as one Tesla owner recently discovered when their car unlocked itself in the dead of night.
The Midnight Heist: A Digital Break-In
A Tesla Model Y owner, known as TheRuinedOne on Reddit, experienced a chilling scenario straight out of a cyberpunk novel. Their car, locked for hours, suddenly unlocked remotely, allowing thieves to ransack it. The method? A compromised API token.
Tessie and the API Token Weakness
The breach didn't occur through Tesla's official app but via a third-party app called Tessie, popular among Tesla enthusiasts for enhanced features. The API token used by Tessie, lacking multi-factor authentication, became the weak link. As TheRuinedOne updated, "Mystery solved! It was hacked third-party access, it was unlocked via Tessie!"
The Achilles' Heel: Overlooked App Permissions
The owner traced the issue to an old Garmin smartwatch app with lingering Tesla access through Tessie. This forgotten app, like a spare key left with a neighbor, opened the door for the thieves. Security researchers have long warned about the vulnerabilities of unofficial access points and third-party apps.
Community Response and Lessons Learned
The Tesla community responded with concern and curiosity, not blame. The incident served as a stark reminder: as cars become smarter, so do the methods of exploiting them. It's a modern twist on the old muscle car adage: "Fast, loud, and loose gets you into trouble," only now it's digital, silent, and potentially invisible.
A Broader Perspective: DEF CON 33 Revelation
The Tesla incident isn't an isolated case. At DEF CON 33, security researcher Eaton Zveare demonstrated how a vulnerability in a dealer management platform could allow remote commandeering of connected vehicles. This highlights the broader risks within interconnected dealer ecosystems and the importance of strict API validations and security measures.
Staying Safe in a Connected World
This isn’t a call to abandon third-party apps. Apps like Tessie offer genuine value. However, due diligence is crucial. Know what you’ve installed, what access you’ve granted, and remember your car is now a node on your personal network, as secure as you make it. Keep those API tokens safe, folks!