Definitions:
- Spam is unsolicited email.
- A virus is a computer program that usually arrives with your email as an attachment, AND, which you have inadvertently opened, and by so doing, causing it to infect your machine.
- Adware is software that delivers adverts to your computer, but may be required by some software to run.
- Spyware is software that sends information from your computer to another, for example, for advertising purposes.