Types Of Viruses On Computers

Learn more about different Types Of Viruses On Computers. Computer viruses are the types of software programs which are written for the purpose of entering a computer system without authority or the user’s knowledge.

Time Bombs/ Logic Bombs– These refer to viruses that follow a certain program to destroy computer data after some conditions are met. They execute at a certain date or at a certain event. For instance, they automatically delete photos on April Fools’ Day. It is hard to detect these viruses until they are launched which could be destructive as well as lead to the deletion of the entire data.

Polymorphic Virus– This is one of the types of viruses on computers which can replicate itself through making multiple files of its own self and not only that but also its digital signature is changed in its every replication. This is not easily detected by an ordinary antivirus software.

Rootkit Virus– Rootkit virus is one of the types of viruses on computers which is undetectable. One can possibly gain access to a computer system without permission with the aid of this virus. The Trojans usually install such virus and it can appear as an operating system file.

Memory Resident Virus– This virus stays in the memory of a computer and is activated every time the OS moves which results in the infection of all the files opened.

Macro Virus– This is one of the types of viruses on computers which infects files that are made with the use of certain programs or applications with macros such as .doc, .pps, .xls, .mdb, etc. in them. Files containing macros are instantly infected by macro virus. Documents like MS Excel or MS Word are infected by this virus as well and its infection can spread to other related documents.

Bootsector Virus – Commonly spread by a floppy disk, this is one of the types of viruses on computers which infects a hard disk’s boot sector.

Worm– This is one of the common types of viruses on computers which can spread through networks and emails. It does not damage or infect files, but its replication takes place very speedily that can collapse the whole network.

Trojan– This can disguise itself as an application or program. This is one of the types of viruses on computers which does not copy or replicate itself but can cause damage or compromise the computer security. The Trojan virus copies computer files resulting in the possibility of damaging the files or even deleting them.

Web Scripting-The complex codes of web pages are included for creating interactive and interesting contents; however this virus has the ability to exploit such codes. This virus can be present in web pages that are infected or web browsers.

Multipartite Virus– This is one of the types of viruses on computers which can spread in many ways possible. At first it has the tendency to stay in a certain computer’s memory the same as what the resident virus does, then infecting the hard disk takes place after.

FAT Virus– FAT virus as its name implies is one of the common types of viruses on computer which infects the FAT sections which can cause information loss from the entire directories or individual files.