Malware is a general term used to identify any malicious software, code, script or programming designed to harm a computer in some way. Developers may create malware for a number of different reasons, whether they want to gain access to and steal restricted or private information, disrupt a computer or network’s operation, or inflict other damage to its software and data. Malware is an ever changing form of crime; masters degree in information security training has been developed to help stop malware and other security threats. There are also a number of different types of malware, and it can be helpful for PC users to know the difference between them, especially if they’re in need of virus removal assistance. Below are three of the most common types of malware.

Virus

A computer virus can automatically create and install a copy of itself on a computer’s files, and – like a virus in humans – it can spread from computer to computer. Viruses require a host program to exist, and they are initiated when the user opens or runs this host file. Typically, this type of malware is designed only to destroy a particular computer’s files, and the extent of its damage can vary. Some viruses are simply annoying, while others can cause more serious damage that requires the attention of a Maryland virus removal professional.

Worm

Much like viruses, worms can automatically replicate and infect multiple files. Unlike viruses, they can operate within a computer without a host file and without attaching to an existing file. Many times, worms gain access to a computer via an email, while other times they enter the network through a vulnerability. Instead of targeting a single computer, worms typically seek to harm an entire network or open a backdoor for other malware.

Trojan

Named after the famed wooden gift horse Greek soldiers used to invade the city of Troy, Trojans operate in a similar fashion. They are disguised as a legitimate or even beneficial program, and once a user enables them, they infect the computer. They are not self-replicating and can only be spread by user interaction, typically through email attachments or internet downloads.