virus is the most commonly used term for expressing the computer problems. in this article i will let you know the main difference between the most famous computer problems, virus, worm and trojan horse. they are all malicious software differs in cause and effect and how they spread. you must be able to protect your computer better when you know them well.

what about virus?

virus is an embedded code which is attached to a file, when you execute the file it infects your hard disk. file transferring and sharing are the main ways causing virus infection as well as By Emails. even you have downloaded the infected file, the virus can not harm your hard disk until you execute the infected file. which means that virus needs you to launch it. note that virus also needs you to spread as the only way is by user involvement. virus can not execute or spread independently. virus can affect other files on your hard disk so be careful but how ever it can not replicate itself  .

worm:

it is similar to virus just in design and some experts consider worm as a subclass of virus. the difference between a virus and a worm  is that worm is really dangerous, it can get access to you computer system and enter your transporting system features. so it is capable of traveling without the aid of the user. a worm also has the ability to reproduce, it can replicate itself, so other than having troubles with one single worm, you are suffering hundreds and thousands of copies of the same worm. and this creates a viscous cycle. in this way of duplicating it can ends up by using of tons of system memory and bandwidth causing servers and systems to crash. another difference from the virus is that it can not infect other files on the hard disk, so your other files are safe from worms.

trojan horse:

trojan horses is the most hated by those people who needs privacy. they are many types such as adware or spyware. when one of them is coming it cheats you. it should appear to be useful, and legitimate application . and may be it will give you dreamlike promises to clean your system from viruses or registry from problems and spyware. that’s true , but when you  execute the trojan you will find the shock. the result will vary from as little as annoying pop-ups or changing desktop back ground, to as big as destroying files and programs. the trojan horses also have the most dangerous function  to create back-doors to your system so that malicious users can log in to your system files and access your private information, knowing your passwords,  master or visa card number.Unlike a virus it can not infect other files on your hard disk. Unlike a worm it can not replicate.

Now you can get Avg ( Internet Security) that protect you from viruses , worms  and Online Threats with all it’s features , it has an Intelligent Tool to make the scan fast and your PC will be safe and clean , we always advice to use AVG because it is a light load on your PC that doesn’t make your PC slower as some “Internet security” softwares do .

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