1- What is a computer virus:
A PC virus is a software software which is able to replicate itself and spread from one inflamed laptop to any other. The infected objects can be gadget, application or document documents. After infecting your computer, it might slow it down, harm the contents of the inflamed files, mislay the information or defect your computer structures ordinary operation.
The virus can also use your pc to propagate unlawful ads and ship spam emails that make the most safety (adWare), scouse borrow your personal facts inclusive of financial institution account variety, credit score card number etc. (SpyWare). Some kinds of viruses might use your computer to create a bot internet (digital computer network) to assault different server systems and web sites and many others.
2- Type of viruses on Windows based totally computers:
There are a number of pc viruses that may hinder the functioning of your laptop. Here are a number of the one-of-a-kind sorts of viruses:
Trojan Horse: It is an electronic mail virus this is created by using a file connected to the email. If opened, it may scour your hard pressure for any non-public and monetary information consisting of your social safety, account and PIN numbers. Once it has gathered your info, it’s far despatched via the internet to a hacker or thief.
Macro Virus: It is a laptop virus that infects the Visual Basic language files for applications together with Microsoft Word, Microsoft Excel etc. This kind of virus can cause harm (inclusive of getting rid of facts on the difficult disk for instance).
Worms: It is a application that has the ability to self-mirror itself. It can flow from one PC to any other and reflect itself to your laptop machine then spread hundreds of its copies to other computers that would cause extensive spread harm.
Rootkit Virus: It is a software that is feasible to cover the strategies, documents and information in the PC Registry (a database that is used to save Windows’s machine and application settings). Rootkit is usually used to cover the activities of viruses and processes which damage your computer. It is to assist a hacker to control the machine.
Boot sector Virus: A virus which attaches itself to the primary a part of the hard disk this is examined by the computer upon bootup. These are normally unfolding by way of floppy disks.
Logic Bombs: It is a program that is used to ship many records to the same electronic mail address and crush the machine or block the server connection. It is likewise used to threaten others (for example mail bomb and so forth.).
Memory Resident Virus: This kind of virus dwells in the RAM. From there it could overcome and interrupt the operations achieved by means of the gadget. It can corrupt documents and programs which are opened, closed, copied, renamed etc.
Multipartite Virus: These viruses unfold in multiple methods. It would possibly vary in its movement relying upon wherein it is mounted and the presence of positive documents.
Three- How do you get an endemic and Prevention:
These are 3 common ways that your laptop may get infected with viruses:
Email: You get an e mail from a person that incorporates one or extra viruses. If the attachment is opened, the viruses might also infect documents within the computer. The viruses might also ship emails to people from your email address book or e-mail folders routinely. So, you have to not open unknown attachments in emails or do an endemic scanning after establishing them.
Internet: If you down load an ex document or a data record from the Internet or other shared networks, viruses is probably transferred to your PC. Sometimes the loose software programs at the Internet have viruses especially if downloading from assets including Torrent or Usenet information agencies. Therefore, if important, you ought to down load files from relied on sources.
Peripheral devices: The devices together with MP3 player, USB thumb drive, Memory card or CD Rom also are the approach for spreading viruses. So, don’t forget to do a virulent disease test for them after they’re connected to your laptop.