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You come across a thumb drive, or USB drive that you don’t recognize. Maybe you find it in the car park of your building or by the copier in the office. You’re curious or you want to plug it in to identify where to return it. Don’t do it. Risks abound.
Consider this jaw-dropping example. That’s how the Stuxnet malware virus that hit an Iranian nuclear facility got its start. It’s believed employees at the facility plugged in a USB drive they found in the car park.
From there the virus could reach the computers controlling the centrifuges, causing them to spin too fast and become damaged. The attackers couldn’t get in directly, as the computers were on a disconnected network.
Now, you might be thinking, “but I’m not an Iranian nuclear facility.” But that doesn’t prevent cybercriminals from wanting to access your network and systems. USB drives are one more way that bad actors can do so. In fact, one study found that 60 percent of people were likely to connect random thumb drives found near their building. If the business logo was on the drive, the number went up to 90 percent.
USB stands for Universal Serial Bus. Even with cloud computing, we still see these small, portable drives used universally. They are compact and convenient. That also makes them an attractive target for bad actors.
Hackers can pre-program USBs to act maliciously once connected to the network. They might:
Most of these can happen without the user even knowing it, as the malware runs in the background.
How do you keep your business safe from infected USB drives? First, don’t insert unknown flash drives. Hackers will try to take advantage of human curiosity or their desire to help.
It’s also good to use different flash drives for personal and professional computers. This helps cut the chances that you’ll spread an infection from one to the other.
You might also enable security measures on USB drives, such as fingerprint authentication. This, and keeping computer software and hardware up to date, can cut vulnerabilities. Also, keep your malware and anti-virus protections current, and patch regularly.
Windows users can also disable the Autorun function. This prevents Windows from automatically opening removable media immediately upon insertion.
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