The virus itself arrives as an attachment but uses a lot of different names for the payload to make it harder to spot.

BBC: Virus makes unwelcome return

It also has an e-mail alert feature designed to send a snapshot of what the camera is seeing as an attachment to any e-mail address.

FORBES: Wi-Fi For Home Security

Do not include your fancy logo in your email unless you are tech savvy enough to make sure it does not appear as an attachment.

FORBES: XOXO, Cheers and Best: 6 Steps to Signing Off

The message, NAVCIRT Advisory 99-045, sent last week, said the so-called Year 2000 readiness programs are carried as an attachment to an e-mail message that may claim to originate from Microsoft Corp. or other well-known PC vendors.

CNN: Navy issues warning on Y2K Trojan horse

Another major problem was seen as making students feel an attachment to the school.

CNN: Survey shows boom in part-time MBAs

Directed at users of Microsoft Word 97 and Word 2000, Melissa arrives innocently enough and can appear as an e-mail attachment sent from a boss, fellow employee or friend.

CNN: 'Melissa' mutates, becomes resistant to patch

Kado President Youngi Son estimates that as much as 15% of Korea's population--some 7 million people--have an unhealthy attachment to the Web.

FORBES: Wired

That makes it especially insidious, as users can infect their computer with software that gives hackers remote access to their desktops without downloading an e-mail attachment or running a program.

FORBES: Magazine Article