Malware

A Malware is generally used for gaining unauthorized access or to damage a computer of a user without their knowledge.  Malwares are of several types such as spyware, worms, virus -just to name a few.  Malware was started as a prank has now turned out into a major destructive software. Stealing of information can also be done by using Malwares. They can be injected through e-mails, advertisements, etc.