Complete the sentences.
1. A virus called Michelangelo had somehow spread … .
2. … the jargon of the computer industry to describe some of the bad things that can happen to computer systems and programs.
3. Some types of viruses include the worm, … .
4. If you use a shared PC or a PC that has public access, … .
5. … : virus shield, which defect viruses as they are infecting your PC, and virus scanners, which detect viruses once they’re infected you.