These problems can’t be patched, one researcher told Greenberg. As Greenberg puts it, all you have to do is not connect your USB device to computers you don’t own or don’t have good reason to trust — and don’t plug untrusted USB devices into your own computer. Thats bad news for lots of projects — including live-boot systems like Tails, which typically reside on USB drives — but it would keep users safe from scary attacks from all corners, including possibly the NSA.