Bad Guys!!

Malware is any malicious program or software that’s designed to exploit a computer user. Malware is basically an umbrella term covering computer viruses, worms, Trojan, spyware, rootkit etc. Some of ‘em attack the computer programs and files while others attack users confidential data. Let’s have a detailed look at their mode of operation.

http://www.guidingtech.com/8888/difference-between-malware-virus-rootkits-trojans-worm-spyware/