Charging Your Phone Using a Public USB Port? Beware of 'Juice Jacking.'

iamtui7/Shutterestock.com

Those in need of a battery boost need to keep some security tips in mind.

Have you ever used a public charging station to charge your mobile phone when it runs out of battery? If so, watch out for “juice jacking”.

Cybercriminals are on the prowl to infect your mobile devices such as smartphones and tablet computers and access your personal data, or install malware while you charge them.

Specifically, juice jacking is a cyberattack in which criminals use publicly accessible USB charging ports or cables to install malicious software on your mobile device and/or steal personal data from it.

Even a 60-second power-up can be enough to compromise your phone’s data. This is because USB cables allow the transmission of both power and data streams simultaneously. Victims can be left vulnerable to identity theft, financial fraud, and significant stress.

USB charging stations are a common sight in shopping centers, airports, hotels, fast-food restaurants, and even on public transport. While juice jacking is neither new nor particularly widespread so far, it was recently highlighted by Los Angeles County District Attorney’s Office as a significant threat, especially to travelers who can easily find themselves caught short and in need of a battery boost.

How does it work?

First, the attackers tamper with the charging stations or cables in public areas, and install malicious software on them. This software then infects the phones of unsuspecting users who subsequently plug into the tampered charger.

The software can invade, damage or even disable your phone. It can also steal or delete data from your phone and possibly spy on your usage activity, to the extent of transmitting your personal information such as account numbers, usernames, passwords, photos, and emails to the perpetrator.

How can I tell if I’ve been juice jacked?

Hacked mobile devices will often go undetected. But there are a few telltale signs that your device may have been hacked. These include:

  • a sudden surge in battery consumption or rapid loss of charge, indicating a malicious app may be running in the background

  • the device operating slower than usual, or restarting without notice

  • apps taking a long time to load or frequently crashing

  • excessive heating

  • changes to device settings that you did not make

  • increased or abnormal data usage.

How do I protect myself?

The tampering of USB charging stations or USB cables is almost impossible to identify. But there are some simple ways to guard against juice jacking:

  • avoid USB power charging stations

  • use AC power outlets rather than USB ports

  • use a portable battery power bank (your own, not a borrowed one!)

  • carry your own charging cable and adaptor

  • use a data-blocker device such as SyncStop or Juice-Jack Defender. These devices physically prevent data transfer and only allow power to go through while charging

  • use power-only USB cables such as PortaPow, which don’t pass any data.

And finally, if you must use a charging station, keep your phone locked while doing so. USB ports typically don’t sync data from a phone that is locked. Most mobile phones will ask your permission to give the USB port access to your phone’s data when you plug in. If you’re using an unknown or untrustworthy port, make sure you decline.

I think I might have been juice jacked – what can I do?

If you suspect you have fallen prey, there are several things you can do to protect your device’s integrity:

  • monitor your device for unusual activity

  • delete suspicious apps you don’t recall installing

  • restore your device to its factory settings

  • install anti-virus software, such as Avast Antivirus or AVG AntiVirus

  • keep your mobile device’s system software up to date. Developers continually release patches against common types of malware.

A lot of data is stored on our mobile devices these days, and protecting our privacy is crucial. While juice jacking may not be a widespread threat, it is important to ensure the safety of our mobile devices. So, the next time you consider using a public USB charging station or cable, ask yourself if it is worth it, particularly as your personal information is at stake.

Ritesh Chugh is a senior lecturer/discipline lead for information systems and analysis at the CQUniversity Australia.

The ConversationThis article is republished from The Conversation under a Creative Commons license. Read the original article.

X
This website uses cookies to enhance user experience and to analyze performance and traffic on our website. We also share information about your use of our site with our social media, advertising and analytics partners. Learn More / Do Not Sell My Personal Information
Accept Cookies
X
Cookie Preferences Cookie List

Do Not Sell My Personal Information

When you visit our website, we store cookies on your browser to collect information. The information collected might relate to you, your preferences or your device, and is mostly used to make the site work as you expect it to and to provide a more personalized web experience. However, you can choose not to allow certain types of cookies, which may impact your experience of the site and the services we are able to offer. Click on the different category headings to find out more and change our default settings according to your preference. You cannot opt-out of our First Party Strictly Necessary Cookies as they are deployed in order to ensure the proper functioning of our website (such as prompting the cookie banner and remembering your settings, to log into your account, to redirect you when you log out, etc.). For more information about the First and Third Party Cookies used please follow this link.

Allow All Cookies

Manage Consent Preferences

Strictly Necessary Cookies - Always Active

We do not allow you to opt-out of our certain cookies, as they are necessary to ensure the proper functioning of our website (such as prompting our cookie banner and remembering your privacy choices) and/or to monitor site performance. These cookies are not used in a way that constitutes a “sale” of your data under the CCPA. You can set your browser to block or alert you about these cookies, but some parts of the site will not work as intended if you do so. You can usually find these settings in the Options or Preferences menu of your browser. Visit www.allaboutcookies.org to learn more.

Sale of Personal Data, Targeting & Social Media Cookies

Under the California Consumer Privacy Act, you have the right to opt-out of the sale of your personal information to third parties. These cookies collect information for analytics and to personalize your experience with targeted ads. You may exercise your right to opt out of the sale of personal information by using this toggle switch. If you opt out we will not be able to offer you personalised ads and will not hand over your personal information to any third parties. Additionally, you may contact our legal department for further clarification about your rights as a California consumer by using this Exercise My Rights link

If you have enabled privacy controls on your browser (such as a plugin), we have to take that as a valid request to opt-out. Therefore we would not be able to track your activity through the web. This may affect our ability to personalize ads according to your preferences.

Targeting cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising.

Social media cookies are set by a range of social media services that we have added to the site to enable you to share our content with your friends and networks. They are capable of tracking your browser across other sites and building up a profile of your interests. This may impact the content and messages you see on other websites you visit. If you do not allow these cookies you may not be able to use or see these sharing tools.

If you want to opt out of all of our lead reports and lists, please submit a privacy request at our Do Not Sell page.

Save Settings
Cookie Preferences Cookie List

Cookie List

A cookie is a small piece of data (text file) that a website – when visited by a user – asks your browser to store on your device in order to remember information about you, such as your language preference or login information. Those cookies are set by us and called first-party cookies. We also use third-party cookies – which are cookies from a domain different than the domain of the website you are visiting – for our advertising and marketing efforts. More specifically, we use cookies and other tracking technologies for the following purposes:

Strictly Necessary Cookies

We do not allow you to opt-out of our certain cookies, as they are necessary to ensure the proper functioning of our website (such as prompting our cookie banner and remembering your privacy choices) and/or to monitor site performance. These cookies are not used in a way that constitutes a “sale” of your data under the CCPA. You can set your browser to block or alert you about these cookies, but some parts of the site will not work as intended if you do so. You can usually find these settings in the Options or Preferences menu of your browser. Visit www.allaboutcookies.org to learn more.

Functional Cookies

We do not allow you to opt-out of our certain cookies, as they are necessary to ensure the proper functioning of our website (such as prompting our cookie banner and remembering your privacy choices) and/or to monitor site performance. These cookies are not used in a way that constitutes a “sale” of your data under the CCPA. You can set your browser to block or alert you about these cookies, but some parts of the site will not work as intended if you do so. You can usually find these settings in the Options or Preferences menu of your browser. Visit www.allaboutcookies.org to learn more.

Performance Cookies

We do not allow you to opt-out of our certain cookies, as they are necessary to ensure the proper functioning of our website (such as prompting our cookie banner and remembering your privacy choices) and/or to monitor site performance. These cookies are not used in a way that constitutes a “sale” of your data under the CCPA. You can set your browser to block or alert you about these cookies, but some parts of the site will not work as intended if you do so. You can usually find these settings in the Options or Preferences menu of your browser. Visit www.allaboutcookies.org to learn more.

Sale of Personal Data

We also use cookies to personalize your experience on our websites, including by determining the most relevant content and advertisements to show you, and to monitor site traffic and performance, so that we may improve our websites and your experience. You may opt out of our use of such cookies (and the associated “sale” of your Personal Information) by using this toggle switch. You will still see some advertising, regardless of your selection. Because we do not track you across different devices, browsers and GEMG properties, your selection will take effect only on this browser, this device and this website.

Social Media Cookies

We also use cookies to personalize your experience on our websites, including by determining the most relevant content and advertisements to show you, and to monitor site traffic and performance, so that we may improve our websites and your experience. You may opt out of our use of such cookies (and the associated “sale” of your Personal Information) by using this toggle switch. You will still see some advertising, regardless of your selection. Because we do not track you across different devices, browsers and GEMG properties, your selection will take effect only on this browser, this device and this website.

Targeting Cookies

We also use cookies to personalize your experience on our websites, including by determining the most relevant content and advertisements to show you, and to monitor site traffic and performance, so that we may improve our websites and your experience. You may opt out of our use of such cookies (and the associated “sale” of your Personal Information) by using this toggle switch. You will still see some advertising, regardless of your selection. Because we do not track you across different devices, browsers and GEMG properties, your selection will take effect only on this browser, this device and this website.