Kia recently faced a significant security flaw in its web portal, as reported by Wired. Researchers found that a vulnerability allowed hackers to access dealer-level permissions, potentially enabling unauthorized tracking, unlocking, and even starting of vehicles. The issue stemmed from a failure in the Kia API to verify new dealer accounts properly, allowing anyone with knowledge of the API structure to create a dealer account and gain full access to Kia’s systems.

 

A Major Misstep in Authentication

This wasn’t a typical “web bug.” It was an authentication oversight: the system didn’t require verification for new dealer accounts. Once registered, these accounts provided direct access to features typically restricted to Kia dealerships. Attackers could look up cars by VIN, adjust ownership details, and remotely control vehicle functions like locking and starting. The problem highlights the risks of not securing API endpoints rigorously.

 

Common Pitfalls in Web Development

As pointed out by the podcast hosts, a lot of developers may not realize how vulnerable client-side code, like JavaScript, can be to exploitation. Unlike server-side code that remains private, JavaScript runs in users' browsers, where it can be examined, edited, and even exploited. Security through obscurity, the idea that code is secure because it’s hidden, is an outdated approach. Any serious system needs a solid authentication mechanism and rigorous testing.

 

The Need for a Dedicated Security Team

Large organizations like Kia should ideally have dedicated security architects to audit and monitor their code, especially when sensitive API endpoints are involved. As more vehicles integrate internet-connected features, this Kia incident serves as a reminder: robust authentication and vigilant monitoring are crucial. For companies without in-house expertise, transferring the task to specialized security teams can help mitigate these kinds of risks.