6 Best USB Data Blockers You Should Use

A USB data blocker is a helpful gadget that prevents unauthorized access to your device’s data via a USB port. The device blocks the data lines in the USB cable to ensure that no data is transferred. This comes in clutch when you want to charge your smartphone at public places such as the airport lounge, shopping mall, etc. But with so many options to choose from, finding the best USB data blocker on the market can be a chore.

Thankfully, we’ve done the legwork for you. Below, you will find the best USB data blockers that are perfect in your fight against Juice Jacking. For those of you unaware, Juice Jacking is a common practice where hackers access your smartphone through a USB cable when it’s charging.

But first, you might want to check out the following:

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The majority of USB data blockers take the shape of a Type-A adapter. That said, folks over at PortaPow have designed their data blocker in the form of a nifty USB-C to USB-C cable. As such, PortaPow’s offering will come in handy if you have a modern smartphone or a tablet that uses a Type-C connector for charging.

PortaPow is one of the most reliable names in the USB data blocker industry. In fact, the company’s blockers have been deployed by a handful of governments across the world, including the USA, Canada, the UK, and New Zealand. That’s not all, as the company works with hundreds of corporations to mitigate data theft too.

The cable itself is small, yet adequately flexible. You get a Type-C male port on one end, and a Type-C female port on the other. Just use the company’s cable as a median between your charging cable and the wall outlet, and you should be good to go.

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Plugable is a trusted name in the industry, and the company is known for its reliable products. However, it’s worth noting that their products do not comply with modern fast-charging standards.

With a peak current of merely 1A, the Plugable USB-MC1 Data Blocker will not win any points in the charging department. That being said, it is still a reliable product – one that you can trust with your eyes closed.

To that end, the Plugable USB-MC1 is superbly compact, and the device can easily fit inside the pockets of your jeans. Although it doesn’t support fast charging, it still makes a case for itself as it is quite reliable. And, when you’re traveling, it’s best to opt for slower yet reliable charging, than risk your data and privacy by using a public charger.

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StarTech is one of our top recommendations for anything involving cables. And, the company’s Secure Charging USB Data Blocker is a stellar product that doesn’t just keep juice jacking at bay, but it supports fast charging too.

First off, the StarTech Secure Charging USB Data Blocker is available in three different designs. You can either opt for a standard USB adapter or get either a microUSB or Type-C cable with data-blocking functionality. Regardless of whichever type you opt for, you’ll be getting a quality product for sure.

In terms of charging, the USB Data Protector delivers 5V at 2.4A, which gives it a maximum rating of 12W. As such, you should be able to top up even the latest iPhones at a fast pace, without having to worry about risking your data. The casing itself is quite rugged too, and you can easily carry it with you wherever you go.

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With over 5,500 reviews and an average 4.5-star rating on Amazon, the PortaPow USB Data Blocker is Amazon’s Choice for the best USB data blocker. And for what it’s worth, the product offers excellent value for money too.

For about the same price as StarTech’s Secure Charging USB Data Blocker, you get a pair of PortaPow USB Data Blockers. Each of these blockers supports charging up to 2.4A.

More notably, PortaPow’s data blockers have a unique security window cut into the metal. As such, you can peek through the design to see that the two data wires have been physically removed. All things considered, if you’re looking for a data blocker for Android or iPhone, your search ends here.

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Planning to get data blockers for the entire family? If that’s the case, you should check out JSAUX’s offering. Available in a pack of four, the company’s data blockers hit the nail on the head in terms of pricing. At the same time, they tout a premium design too.

Available in either Red or Black colorways, the JSAUX USB Data Blocker is enveloped in a luxurious Aluminum shell. A fringe benefit of the same is that the aluminum casing offers enhanced durability and prevents internal chips and circuits from breaking. The casing also sports an indent for a better thumb grip, thereby ensuring you don’t accidentally drop the device.

In terms of charging, the JSAUX USB Data Blocker supports a peak current of 2.4 Amps. The charging speeds are on par with the competition. As such, the JSAUX USB Data Blocker should work seamlessly with a wide range of iPhones as well as Android smartphones.

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If you’re looking for the best USB data blocker on the market, you should check out OffGrid’s contender. OffGrid, as a company, is known for making privacy-focused products, and the company has an impressive USB Data Blocker up for grabs as well.

The OffGrid USB Data Blocker is available in both Type-A as well as Type-C avatars. You can opt for the one that suits your device better. Additionally, the product is sold in a set of two, meaning you won’t be spending a large sum of money on a single item.

Similar to the JSAUX USB Data Blocker, OffGrid’s USB Data Blocker touts a metal exterior coupled with ABS plastic interiors. Put together, the USB Data Blocker offers a lightweight yet durable design. Also, it’s quite sleek and looks very premium too.

As for charging, the unit is compliant with USB 3.0 protocol. Although the company doesn’t mention an exact speed, consumers cite that it works flawlessly with devices like the Apple iPhone 13 Pro Max and more.

Using a USB data blocker is essential for protecting your devices and personal information from potential data breaches. When you connect your device to an unknown or untrusted USB port, such as public charging stations or shared computers, a data blocker ensures that no data exchange occurs, keeping your information secure.

Yes, USB data blockers can help prevent certain types of malware infections that may occur through data transfer over USB connections. By blocking data exchange, they reduce the risk of malicious software being transferred from an unknown or untrusted USB port to your device.

Most USB Data Blockers limit charging to 2.4A, which takes a toll on a modern smartphone’s peak charging rate. But that’s the price you must pay to protect your privacy in a public environment.

Yes, USB data blockers are legal to use. They are considered privacy and security accessories that protect your personal information from potential data breaches.

USB data blockers are essential accessories for maintaining data privacy and security while charging or connecting devices through USB ports. Needless to say, you should find a USB Data Blocker that fits the bill from the options prefaced above. Whether you’re a frequent traveler or concerned about data security in public places, the aforementioned USB data blockers will provide peace of mind and prevent unauthorized data access.

Last updated on 18 July, 2023

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Microsoft Windows 1.0 was first released in November 1985.

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The content head for the Guiding Tech YouTube channels, Varun also contributes to the website for Buying Guides and Product Explainers. Feel free to reach out to him on Twitter.