How To Differentiate In Virus, Worm, Trojan & What They Are

A malicious program can be categorize in many types some of then are as follows

1. Trojan
   
2. Worm
   
3. Virus
   
4. Spy ware etc..
   

To understand this we have to follow this flow chart which takes a program as input and then as per their working we can categorize that what type of program is that.

We can easily understand the categorization of Virus, Worm & Trojan with the help of this flow chart.