A computer virus is a computer software that will be ready to copy itself and spread in one infected computer to another. The infected materials can be program, plan or document files. After infecting your PC, it could slow down, hurt the contents of the documents, mislay the information or flaw your computer systems normal operation.
The herpes virus also can use your PC to grow illegal ads and deliver spam emails that exploit security (adWare), steal your own personal information-such as bankaccount number, bank card number etc. (SpyWare). Some forms of infections might use your PC to make a bot net (virtual pc system) to strike other server systems and sites etc.
2- Type of worms on Windows based computers:
There are a quantity of computer worms that can impede the functioning of your computer. Below are a few of the various types of infections:
Trojan Horse: It is an email virus that's developed by a document attached with the e-mail. If exposed, it may scour your hard drive for almost any financial and personal information-such as your social bill stability and GREEN numbers. Once it has collected your info, it's sent via the web to a hacker or thief.
Macro Virus: It is a PC virus that infects the Visual Basic language papers for purposes such as Microsoft Word, Microsoft Excel etc. this kind of virus may cause harm (including eliminating data about the hard drive like).
Worms: It is an application that has the capability to self-repeat itself. It can shift to a different from computer and repeat itself within your computer system then spread a huge selection of its copies to other computers that might trigger wide spread damage.
Rootkit Virus: It's a course that is feasible to protect the procedures, files and info inside the pc Registry (a database which will be used to save lots of Windows's process and program settings). Rootkit is usually used to hide worms and processes' activities which damage your computer. It is to help a hacker to regulate the machine.
Bootsector Virus: A virus which links itself to the first the main disk drive that is read from the computer upon bootup. Drives typically spread these.
Logic Bombs: It's a program that is applied to send several data for the same email and overwhelm the machine or block the host connection. It is also applied to threaten others (as an example email blast etc.).
Memory Resident Virus: this kind of virus resides inside the Memory. From there it might overcome and disrupt the procedures performed by the system. It could corrupt packages and files which might be opened, closed, copied, renamed etc.
Multipartite Virus: These infections spread in numerous methods. It might change in the presence of selected records as well as its action dependant on wherever it's fitted.
