If you ever find a USB thumb drive on sidewalk, and you’re curious to see what’s on it, DON’T. If you’re LUCKY, it’s only been left behind intentionally to infect your computer with malware. If that’s the case, your PC might survive. However, these days, there’s a chance that it’s a specially-prepared device that will fry your system with a high-voltage negative DC charge on insertion. We’ve tested one such product on an old unit in our office and it worked immediately and completely. The machine was dead.
Always be vigilant when it comes to the security of your network.