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Millions of Cars at Risk from New Bluetooth Hacking Technique: What You Need to Know About "PerfektBlue"

Millions of Cars at Risk from New Bluetooth Hacking Technique: What You Need to Know About "PerfektBlue"

July 11, 20253 min read

Threat Notice Originally Posted on SecurityWeek.com


Cybersecurity isn’t just about computers and phones anymore—it’s moved into the driver’s seat, literally. A newly discovered vulnerability in the Bluetooth software used in millions of vehicles has opened the door for hackers to remotely access sensitive information and potentially even take control of certain systems.

Researchers at PCA Cyber Security have identified several critical flaws in the BlueSDK Bluetooth stack, a software framework developed by OpenSynergy. This stack is used in infotainment systems from major automakers like Mercedes-Benz, Volkswagen, and Skoda, among others.

What’s the Threat?

Dubbed “PerfektBlue,” the threat allows a nearby attacker to pair their device with a car’s infotainment system over Bluetooth and gain high-level access.

In real-world terms, that means a hacker could:

  • Track a vehicle’s location

  • Access call history and phonebook contacts

  • Record audio from inside the vehicle

  • In some cases, even move laterally into other systems of the vehicle

And here’s the kicker: in some models, this attack can happen without the driver even knowing. The attacker may only need a single click—or no interaction at all—to gain access.

How the Attack Works

PerfektBlue takes advantage of flaws that allow a hacker to execute code remotely once they’re within Bluetooth range of the vehicle. From there, they can gain control over the infotainment system and, potentially, use that foothold to move into more critical systems, like those controlling steering or braking.

Although researchers have not yet publicly demonstrated attacks on core driving systems using PerfektBlue, earlier hacks (like those involving the Nissan Leaf) have shown how infotainment access can lead to deeper compromise.

This is not just a hypothetical scenario. PCA Cyber Security has already demonstrated the exploit against several car brands and informed OpenSynergy, the developer of BlueSDK, back in May 2024. Patches were issued starting in September 2024, but as of today, many automakers still haven’t deployed the fix.


Why It Matters to Your Business

Many businesses rely on company vehicles or have executives who are frequently on the road. A compromised car is not just a personal risk—it can become a business risk, especially if sensitive calls, contact info, or location data are accessed through the vehicle.

If your team uses vehicles from affected brands—or if you serve high-net-worth individuals or executives—you need to understand the implications.

What You Should Do

Here are the immediate steps we recommend:

  • Check for firmware updates on all vehicles, especially infotainment systems.

  • Avoid pairing unfamiliar Bluetooth devices, especially in public locations.

  • Work with a cybersecurity partner to audit vehicle risks and fleet security protocols.

  • If your organization manages a mobile workforce, consider a mobile/vehicle threat assessment as part of your overall security strategy.


Final Thoughts

The PerfektBlue vulnerability is a wake-up call: in today’s world, “connected” means everything is a potential target—from your cloud servers to your company car.

At qnectU, we believe true cybersecurity means protecting every digital doorway—including the ones with wheels.


References 


Need help reviewing your risk exposure or understanding if your team is vulnerable?  Schedule a quick 26-minute call with Greg Mauer to discuss your concerns or answer your questions.

Car HackingBluetooth DevicesHigh RiskqnectU
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Greg Mauer

Gregory Mauer is the founder and CEO of qnectU, a best-selling author, speaker, and a cybersecurity & compliance expert. He has been on stage with the likes of the “Nice Shark”, Robert Herjavec, Siri co-founder Adam Cheyer, and business coach and author, Mike Michalowicz.

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Do you perform regular risk assessments?

Here at qnectU, we conduct regular risk assessments as a core part of our risk management strategy. Our process is comprehensive, involving identification, categorization, and response planning for potential security risks, including technical vulnerabilities, access controls, and more. These assessments help us understand, control, and mitigate all forms of cyber risk, ensuring that our security measures are effective and up-to-date. But most importantly, we provide continual risk assessments at pre-determined intervals based on your company’s risk level. This ensures that issues are corrected, new risks are identified, and compliance is properly documented. Want to see how our in-depth business risk assessments work? Book a consultation today to get an in-depth risk assessment of your company’s current network security.

Do you follow proven change management principles? 

We are committed to following proven change management principles. We understand the importance of structured and systematic processes in implementing changes that affect cybersecurity protocols and IT environments. Our approach is based on industry-recognized frameworks and methodologies that ensure changes are managed effectively, focusing on minimizing risks, enhancing security posture, and achieving strategic objectives.

Do you address all my compliance needs, including HIPAA?

We specialize in Compliance as a Service (CaaS), and our program is designed to meet a wide range of regulatory requirements to ensure that your business adheres to the highest standards of compliance. We demonstrate our compliance through detailed assessments, documentation, and third-party audits. Our expertise and ongoing support can give you confidence that your company’s sensitive information is managed securely and in full compliance with all regulations.

Is third-party auditing provided to ensure cybersecurity and compliance requirements are being met?

In today’s world a business can easily be compromised via a “supply chain hack.” There have been several instances where the IT company has exposed all of their clients to hacking due to their own lack of cybersecurity measures. In order to prevent this within our own company, we work closely with a third party for comprehensive auditing services to ensure that all cybersecurity and compliance requirements are met. Our rigorous audit process involves a thorough examination of our systems and practices against established industry standards and best practices. This collaboration provides an objective perspective and deep expertise to identify any potential vulnerabilities, ensuring that our cybersecurity measures are robust, up-to-date, and in full compliance with regulatory demands.

What is Compliance as a Service (Caas)? 

Compliance as a Service (Caas) means that our experts will give you specialized help in handling all the rules and regulations your business needs to follow. We do this by providing expert guidance to help you determine what rules apply to your business and how to follow them. All while giving ongoing support to monitor your compliance status and updates in regulations. This may also include any advanced tools to help manage compliance tasks and risk management surrounding compliance. CaaS takes the hassle out of compliance so you can focus on running your business with confidence.

Who is Greg Mauer? 

Gregory Mauer is the founder and CEO of our company, a best-selling author, speaker, and a cybersecurity & compliance expert. He has been on stage with the likes of the “Nice Shark”, Robert Herjavec, Siri co-founder Adam Cheyer, and business coach and author Mike Michalowicz.

Answers To Common Questions

Frequently Asked Questions

Do you offer access to senior IT consultants or a vCSO for oversight and guidance? 

Yes, we offer access to senior IT consultants and provide vCSO(Virtual Chief Security Officer) as a service for our clients. Our vCSO service provides your organization with expert leadership and strategic direction tailored to your unique cybersecurity and legal compliance needs. We are here to help you navigate the complexities of cybersecurity and ensure that your security posture is robust, compliant, and capable of addressing evolving cyber threats. Book a call today to get expert help with your company’s cybersecurity and compliance.

Do you have a high level of confidence in your security posture? If so, can you explain why?

We have a high level of confidence in the security posture of our company and our clients. Our security stack includes several components to ensure strong and resilient cybersecurity measures. We provide comprehensive risk management, regular audits and assessments, advanced security technologies, employee training and awareness, and incident response planning. Our systems and solutions follow established industry standards and best practices to keep your company safe and your data secure. Since every company has different risks depending on the data, systems, utilization, and more, we can work with your team to develop a robust security plan and implement the proper measures as needed. Reach out today to strengthen your company’s security posture!

Do you have a Disaster Recovery (DR) plan? If so, what’s in place? Is it tested regularly?

We provide robust Disaster Recovery (DR) plans, covering preventative, detective, and corrective measures. Our DR strategies are tailored to each client’s specific needs and are designed to ensure rapid recovery and continuity of operations in the event of any disaster. These plans are regularly reviewed and tested to guarantee they function effectively and meet the highest standards of resilience and reliability. And if a disaster were to occur outside of regular business hours, we have you covered! At qnectU, we have a response time of mere minutes for emergency after-hours calls, ensuring a rapid response to implement your Disaster Recovery plan. Book a call today to protect your company in the event of a disaster.

Do you perform regular risk assessments?

Here at qnectU, we conduct regular risk assessments as a core part of our risk management strategy. Our process is comprehensive, involving identification, categorization, and response planning for potential security risks, including technical vulnerabilities, access controls, and more. These assessments help us understand, control, and mitigate all forms of cyber risk, ensuring that our security measures are effective and up-to-date. But most importantly, we provide continual risk assessments at pre-determined intervals based on your company’s risk level. This ensures that issues are corrected, new risks are identified, and compliance is properly documented. Want to see how our in-depth business risk assessments work? Book a consultation today to get an in-depth risk assessment of your company’s current network security.

Do you follow proven change management principles? 

We are committed to following proven change management principles. We understand the importance of structured and systematic processes in implementing changes that affect cybersecurity protocols and IT environments. Our approach is based on industry-recognized frameworks and methodologies that ensure changes are managed effectively, focusing on minimizing risks, enhancing security posture, and achieving strategic objectives.

Do you address all my compliance needs, including HIPAA?

We specialize in Compliance as a Service (CaaS), and our program is designed to meet a wide range of regulatory requirements to ensure that your business adheres to the highest standards of compliance. We demonstrate our compliance through detailed assessments, documentation, and third-party audits. Our expertise and ongoing support can give you confidence that your company’s sensitive information is managed securely and in full compliance with all regulations.

Is third-party auditing provided to ensure cybersecurity and compliance requirements are being met?

In today’s world a business can easily be compromised via a “supply chain hack.” There have been several instances where the IT company has exposed all of their clients to hacking due to their own lack of cybersecurity measures. In order to prevent this within our own company, we work closely with a third party for comprehensive auditing services to ensure that all cybersecurity and compliance requirements are met. Our rigorous audit process involves a thorough examination of our systems and practices against established industry standards and best practices. This collaboration provides an objective perspective and deep expertise to identify any potential vulnerabilities, ensuring that our cybersecurity measures are robust, up-to-date, and in full compliance with regulatory demands.

What is Compliance as a Service (Caas)? 

Compliance as a Service (Caas) means that our experts will give you specialized help in handling all the rules and regulations your business needs to follow. We do this by providing expert guidance to help you determine what rules apply to your business and how to follow them. All while giving ongoing support to monitor your compliance status and updates in regulations. This may also include any advanced tools to help manage compliance tasks and risk management surrounding compliance. CaaS takes the hassle out of compliance so you can focus on running your business with confidence.

Who is Greg Mauer? 

Gregory Mauer is the founder and CEO of our company, a best-selling author, speaker, and a cybersecurity & compliance expert. He has been on stage with the likes of the “Nice Shark”, Robert Herjavec, Siri co-founder Adam Cheyer, and business coach and author Mike Michalowicz.

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