Viruses do come in many forms and they will ultimately affect the functionality of your system in either of the ways. But if the virus infection is much severe then it will be responsible for creating massive havoc to the system. This article will help you in figuring out the most common computer viruses along with the brief information about it.
Knowing about what is boot sector virus:
Boot sector viruses are responsible for infecting the master boot record, they cannot be removed easily from your system. Thus in order to remove them completely, you may need to perform a full system format. These viruses are likely to spread from the removable storage devices but the improvements in BIOS architecture has reduced their impact to a certain level.
What is direct action virus?
This virus can be termed as non-resident, it neither installs itself nor it remains hidden in your computer memory. It will attach itself to .exe or com files and when the user executes the file it will spread thus looking for similar files. Basically, it won’t affect the system performance or delete any of your files due to which it can be easily removed with the help of any antivirus program.
Resident viruses are also another popular type of file infectors. These viruses will install themselves on the computer. Besides, they are so prompt that even if the original source file is removed, you are able to work without any difficulty. They are more dangerous as compared to direct action ones. They fall into two categories i.e. fast infectors and slow infectors.
Learn about Multipartite Virus:
As the name suggests these viruses are likely to spread in multiple ways, which is responsible for taking different actions on the infected computer. It will spread in the boot sector as well as on the executable files in a rapid manner. It is difficult to remove the virus and it will be reproduced once the system is turned on.
How Polymorphic Virus affects?
Polymorphic viruses are not at all easily detected, antivirus companies will spend months for detecting a single polymorphic. Since polymorphic virus are able to create different signatures each time (changes the binary pattern). Due to this, the antivirus program identifies as a completely different piece of software.
Overwrite Viruses: These viruses are responsible for deleting the contents of files. This would be tedious for the end user because you are left with no option other than deleting those files permanently. Overwrite viruses will spread via email and infect standalone as well as entire pieces of code.
Understanding Space filler virus:
Space fillers are also known as cavity viruses. They will try to get into the empty space that can be found within the file itself. It will increase the code size and release the need for anti-detection techniques.
Here is a cool virus infected file recovery software readily available that will salvage items deleted or lost due to virus infection.