Now you can kill any device with a USB port

There's all sorts of mischief you could do with one of these:

Once a proof-of-concept, the pocket-sized USB stick now fits in any security tester's repertoire of tools and hacks, says the Hong Kong-based company that developed it. It works like this: when the USB Kill stick is plugged in, it rapidly charges its capacitors from the USB power supply, and then discharges -- all in the matter of seconds.

On unprotected equipment, the device's makers say it will "instantly and permanently disable unprotected hardware".

I guess it's worth repeating my advice to be very suspicious of any USB stick you find lying in the parking lot.

The only good news about this is that the Bad Guy has to have physical access to the target device, but still ...