In addition to the common methods of spreading through email attachments, boot infections and program infectors, there are other ways by which viruses spread to your computer. These include:
Infection by Disk(Floppy, Zip, CD’s, Tapes, etc.)
Floppy disks, though not as commonly used as in the past, are still a very common way viruses being spread from machine to machine. Anyone with an infected machine, using a floppy disk to copy and save files, can also copy and transfer the virus. Any use of that same removable disk, by any user, at any time in the future, will most likely contaminate, or re-contaminate the any computer it is used with. The only way to properly clean an infected floppy disk is to perform a low-level format. The normal Windows(tm) “format disk” is often not enough.
With CD’s, all the above holds true with the exception that an infected CD can never be cleaned. To get rid of an infected CD, you need to put it in the trash and never use it again.
Infection from Networks
Peer-to-Peer network, Local Area Networks (LAN), a Wide Area Network (WAN), Wireless Networks, and the Internet, are all computer...