The computer is an electronic device which helps its users in carrying various mathematical and logical calculations. A computer has some basic hardware equipment which understands binary language. In order to run this PC users need an operating system and this operating systems helps the PC to carry out all mathematical and logical calculations in a systematic way. Software is a list of programs written by professionals to run the computer.

Software programs can be modified into a deadly component which corrupts the files on the system and makes it of no use. This program which is responsible for damaging a computer system is called a virus. This infection travels from one medium to another medium and damages everything that comes on its way. It kills or breaks the programs coming on its way and disturbs their regular functioning.  Besides corrupting the data a virus can also steal the data and should be removed with a free trojan remover tool. Most of the computer professionals who have a cruel intention, create these harmful programs and send them to the targeted people. Whenever those targeted people click on the links of this virus the data required by the hackers will be steeled and system of the targeted person will be corrupted.

Among all the common ways of spreading this infection, the Internet is the main medium. We call internet as inter connection of various networks. People can connect to this internet from any part of the world through their system by an internet connection. Hackers generally invent viruses which goes into a private network and builds up a gateway for the flowing data. This gateway prevents or damages the data passing over the internet. Sometimes viruses will gather all the information of the user’s identities and sends them to the hackers. This is how we see news of “International company websites being hacked”. Most of these malicious files are sent to users through websites or emails. Whenever a user by mistake clicks on this link of computer virus, it gets loaded into his system and corrupts or damages the files of that computers operating system.

It can also be defined as a malicious or unwanted program which corrupts and kills the files coming on its way and is only removable with a free virus protection software. Today, internet banking is more common among people. Sometimes, to steal data of internet banking customers, hackers send a hidden and infectious link to their system. When the user logs into the original bank website this link gets activated and gathers the information about user’s id and password. Then this link sends the feedback to the hacker and helps him in transferring funds from the customer account.

Before understanding the ways for preventing this malicious infection, you should know the types of viruses available in the internet. The first important type about which you should know is Resident Virus. This resident type stays on RAM of your computer memory. When it stays on your RAM, all files and programs you are working on will be damaged. Direct action virus is another powerful one which replicates and infects all files on your computers directory.  This harmful program goes into the hard disk of your system and corrupts the files located in it. This computer infection starts its damage to your system when you boot the system for next time. Overwrite infections are a special type of virus which deletes the information on your system. This computer virus loads on to your system and infects the major sectors of your disk. The Overwrite is called as a deadly weapon of hackers and can inflict havoc on your computer system. This type is used by hackers to corrupt major websites of government organizations. It simply goes into the network of military within less time and damages all the official files stored on their server. This overwrite virus gets loaded onto your system and stays in hidden files, when you go the files directly and look for hidden files, this  virus becomes visible. To remove this you should delete the folder in which it is operating or use a free virus protection tool.

The next is the Boot one which is a special virus which targets the Boot sectors of your operating system. It has capacity of affecting the parts of your computer. It can affect your systems floppy drive or hard disk. They generally targets on important sectors of the hard disk so that you cannot erase it for long time.  Today, these viruses are off less prevalence because individuals are not using floppy disks for carrying information. Directory virus is another special type which changes the paths of files located on your hard disk. This infection does not get recognized by a free virus protection software.

File infector are most common types of viruses which infect programs or executable files. These are mostly found on free programs which are available for download in the internet. Companion virus is a strange and effective one which acts as a helper for the infection present on your system. File allocation table viruses are special which can make the information go missing.  Worm is a classical virus which moves in the internet just like an ordinary warm. This malicious software can copy itself and reproduce it self for many times. It loads an unwanted program on your computer and gets loading up for many times. Most of the operating systems though have a multi panel pop up capability, limit them only for a certain extent. When this limit exceeds the operating system looses its ability and gets struck. Classical worm virus is a powerful component which breaks the computers time frame and slows down the system.

Among all the standard protection ways, the best is usage of an free virus protection software. Some of the powerful companies like MacAfee, Symantec, and Avast offer their software’s on trial basis on the internet. This trial version software takes a systematic scan of your system and removes the computer infection which is currently available on it. In order to get full services of these companies’ users should get full version upgraded. As these malicious programs choose email as common medium for their spread, you should check your mails with some potential problems. If this PC security tool detects a harmful piece of software in that particular file then it should be deleted.