Be careful with unknown flash drives!

A warning from Sophos' Naked Security:

Curious people can't resist plugging in random flash drives

Quote:

An infection rate of 66% means there are a lot of malware-spreaders in our midst. Assume that a lost USB stick is likely to be an infected USB stick, so don't plug it in. Encrypt personal and business data before you store it on a USB device so it can't be accessed if you lose it.

Basically, don't give in to your natural curiosity!

Be careful with unknown flash drives!