Most people associate today's computer viruses and other prevalent malware with the Internet. But that's not where they started. Lest the authors forget, the earliest computer threats came from the era of floppy disks and removable media. With the arrival of the Internet, email and network-based attacks became the preferred infection vector for hackers to spread malicious code - while security concerns about removable media took a back seat. However, their attention is returning to plug-in media. Over the years, floppy disks have been replaced by portable hard drives, flash media cards, memory sticks, and other forms of data storage.