- Viruses enter your system via e-mail, downloads, infected floppy disks, or (occasionally) hacking.
- By definition, a virus must be able to self-replicate (make copies of itself) to spread.
- Virus behavior can range from annoying to destructive.
- Antivirus software can detect nearly all types of known viruses, but it must be updated regularly to maintain effectiveness.
Protecting Yourself Online