I just found a USB drive

If PFWC were a company, I would consider this article bad PR since someone just sort of glancing at this would start to see USB sticks as security risks.

Like any good PR person, I might spin it and point out how this is a good thing for portablefreeware.com and related sites: someone finds a drive, it has a lot of space, what could I do with it?  As a result, wanted to point out a quick sequence of steps for making sure its not going to hurt you:

1. Find a non-Windows device and Immediately format it, ideally to the FAT32 filesystem
2. There is no step 2
   

Optionally, update your install to NTFS on a Windows-based machine.  This is only necessary if you're going to use the device for anything other than a backup.