What are Different forms or types of electronic infection?

Answer 1

There are four common forms of electronic infection, 1. Viruses - A virus is a small piece of software that piggybacks on real programs. A virus can attach itself to a program like a text editor program (like MS Word). Each time the program runs, the virus runs as well, gaining the opportunity to reproduce (by attaching to other applications like Excel or Outlook) and then wreak havoc. 2. An 'email virus' travels within email messages, and replicates itself by automatically self-mailing to dozens of people in the YOUR email address book. 3. A 'worm' is a small piece of software that uses computer networks and security holes to replicate itself. The worm scans the network for another machine that has a specific security hole. It copies itself to the new machine using the security hole, and replicates from there. 4 A 'Trojan horse' is an average computer program. It claims to do one thing (e.g. - it claims to be a game, or a calendar, or a weather monitor) but instead does damage when you run it (e.g. - it erases your hard disk, or more likely, runs spy-ware). Trojan horses have no way to replicate automatically.