Juice Jacking

What is Juice Jacking?

In an era where staying connected is essential, public charging stations have become commonplace. However, amidst the convenience lies a subtle yet potent threat known as Juice Jacking. Juice Jacking refers to a cyber threat where attackers compromise public charging stations, with the intent to steal data from connected devices.

Smartphones, regardless of model, share a common vulnerability: the power supply and the data stream pass through the same cable. This can be a problem, as when a phone pairs with a device, it establishes a trusted relationship, enabling the sharing of information. During the charging process, the USB cable opens a pathway into the device that cybercriminals may exploit. They achieve this by manipulating USB ports or cables used for charging to transfer malware onto the connected device, gaining access to sensitive information such as passwords and personal data.

Juice Jacking is mostly prevalent in high-transit areas, like airports, owing to the fact that they are often stressful and fast-paced environments. These kinds of environments tend to promote quick decisions, like ignoring sound advice and plugging your phone into a public charging port.

How Does Juice Jacking Work?

Public charging stations often utilise USB ports, making them susceptible to compromise. Cybercriminals can tamper with these ports, installing hardware or software that allows them to access data from connected devices.

Using a crawler program on the device, the cybercriminal can search for personally identifiable or financial information, and account credentials before proceeding to transfer the data onto their device. This can be used to impersonate the victim or access their financial records. This process typically occurs rapidly, and the victim may not be aware that their information has been stolen until it is too late.

Alternatively, cybercriminals can use malware to clone the victim’s phone data and transfer it onto their own device. They may also gather data such as social media interactions, purchases, GPS location, call logs, and photos. Once the victim’s device is frozen or encrypted with any of these malwares, the cybercriminal may proceed to demand payment to restore the information.

Preventing Juice Jacking

Users can take the following precautions to protect their devices:

  1. Avoid Public Charging Stations: Whenever possible, use your personal charger and plug it into a trusted power source. This reduces the risk of connecting to a compromised charging station.
  2. Invest In Portable Chargers: Carry a portable charger or power bank to ensure your devices stay charged without the need for public charging stations.
  3. Use USB Data Blockers: USB data blockers can be used to block data transfers while allowing charging. These devices are designed to prevent the exchange of data between your device and the charging port, safeguarding your information.
  4. Update Software Regularly: Keep your device’s software up to date, as manufacturers often release security patches that address potential vulnerabilities.
  5. Enable USB Restricted Mode: Many smartphones offer a USB Restricted Mode, which disables data transfer when the device is locked. Activate this feature to add an extra layer of protection.
  6. Be Wary of Untrusted Cables: Avoid using cables from unknown sources, especially in public places. Stick to cables from reputable manufacturers to reduce the risk of using compromised accessories.
  7. Use A Wall Outlet: Consider using a regular AC wall outlet if you need to charge your phone when you are in public.


As the prevalence of public charging stations continues to grow, so does the risk of falling victim to Juice Jacking. Being aware of this cyber threat and adopting proactive measures to protect your devices is crucial in an increasingly interconnected world. By taking precautions and staying informed, users can enjoy the convenience of public charging without compromising the security of their sensitive data.

Tivarri is both ISO 27001 (the main information security standard) and Cyber Essentials certified. Our solutions—Cranberry Cloud and Cranberry Desktop—are configured to ensure that your critical digital information is protected from both internal and external threats. Get in touch to find out more about how we can keep your business secure and support your growth.

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