Nowadays viruses are highly infecting the computers and causes damage to it. It is very necessary that you keep your computer safe from hackers and viruses. Viruses often infect your computer in the form of greetings, email attachments, funny images, video, audio etc. For this reason, it is advisable that you do not open email attachments. You should open them only if you are expecting attachments from someone. Do not open an attachment with extensions such as .scr and .pif.

Viruses can infect your computer when you download files from internet. One must download only from the reputed and official websites. It is necessary that you update antivirus as soon as it gets expired. Regular scans should be run whenever computer is on. Keeping your computer virus free increases the speed and performance of the computer. Computer virus damages your programs thereby disabling the computer and creating a worse situation.

Viruses play a vital role in infecting the computer and damaging all the data of the computer. If virus infected a computer of a company, then it can destroy the business of that company by making the system unrecoverable. Nowadays antivirus software has been designed for the security of the computer and its data. There are several antivirus available in the market. Out of them some antivirus are free i.e. they provide a free antivirus scan and protects your computer from the virus.

Free antivirus software is found in market in large amount. It is necessary to take care while selecting antivirus for your PC. The free antivirus that has feature of effectiveness must be chosen. Ease of use is another factor that must be considered while choosing free antivirus software. Free antivirus that you select must also contain firewall and spam blocker. Avast is the free antivirus that you can choose for your PC since it detects even the smallest virus from your PC.