1. what is a computer virus? 2. how does a computer virus work? 3. what do you do to prevent computer injections? 4. do you keep your virus protection updated

1. A virus is a small piece of software that piggybacks on real programs
2. А virus might attach itself to a program such as a spreadsheet program.
3. I downloaded antivirus program on my computer.
4.No, because I don’t know how to do update.