VIRUS stands from Vital Information Retrieval Under Siege.
The origin of viruses cannot be traced back to one single computer or one single hacker – viruses are being released into the Internet stream by thousands of unethical hackers every day. If your computer is vulnerable, they attach themselves to files in your computer and prevent their normal functionality.
They can gain entry to your system through CDs, floppy disks, USB devices, a network and mainly the internet.
Irrespective of the operating system you use, viruses target your system if it is not protected by a security system though Windows is more likely to be attacked since it is the most used operating system in the world.
Viruses are of different types – some can be self-replicating and attach to all application files preventing them from being opened and others can just destroy files without your authorization.
If your system starts to run slow and applications take too long to open, you might consider that an indication that it is infested with viruses. The best thing to do in case of an infestation is to install an antivirus application and perform a full disk scan for viruses. However, the wisest option would be to connect to the Internet or even use your computer after installing a virus scanner to prevent unauthorized entry.
Viruses can attack your computer through any means. Therefore, it is best not to open attachments from unknown people or even ones with suspicious names. Even if you’re chatting with people, you have to refrain from clicking on links within the message. You never know where viruses can enter your system from.
There have been cases of viruses that have interfered with the normal scanning process of antivirus applications.
Typically, when a virus infected application is opened, it replicates itself and attach with other application files in the same folder or even in the same root.
There are multiple methods to recover your system after a virus attack – either scan the whole system with a virus scanner or restore your hard disk to an older state where you might lose some files but you will definitely save your system. Saving a backup of important files onto an external hard disk and USB drives are a good way of protecting documents.
Article provided for: Computer Viruses