A recent study by Symantec shows that 50% of Mumbai Computers, 13% in Delhi and 7% in Hyderabad are infected with Botnets. The Botnets have capability to bring down not only the whole network but entire Internet of a geographical area. Read Story Here
Botnets are computer programs, who automatically look for unsecured computers and start residing in it, by infecting various files and folders. Though main aim is to steal important confidential information like passwords, credit card info, etc.
Therefore, it is quite important that a computer machine is properly protected with the help of Antivirus programs, which has lot of option these days with paid ones like Norton, Mcafee, QuickHeal to Free versions offered by AVG, Microsoft, etc.
It is quite interesting to note, that since last year, Microsoft has also launched security tools that can be downloaded for Free on an original Operating System (Vista of Windows 7). Download here