How many people hack computers everyday?

Answer 1

Mostly they plant malware on computers. Malware covers all kinds of malicious software designed specifically to do some damage to computers and networks. The kind of malware you may be thinking of are viruses. A virus is malware that can duplicate itself and spread throughout networks. There are many other kinds of malware out there. If you want to read more about malware you can look it up on wikipedia. Google also has some information here.