During the first half of 2010, more than two million computers in the United States alone were found to be part of a botnet. Microsoft performed the research, which showed that Brazil had the second highest level of infections at 550,000. The country hit hardest is South Korea, where 14.6 out of every 1000 machines were found to be enrolled in botnets.
Cliff Evans is the head of security and identity in the UK. “Most people have this idea of a virus and how it used to announce itself,” he said. “Few people know about botnets.” Botnets start when a virus infects a computer, either through spam or an infected web page. The virus puts the Windows machine under the control of a botnet herder. “Once they have control of the machine they have the potential to put any kind of malicious code on there,” said Mr Evans. “It becomes a distributed computing resource they then sell on to others.”
The stats for the report were gathered from more than 600 million machines which are enrolled in Microsoft’s various update services or use its Essentials and Defender security packages. The conclusions of the report show that people need to be much more vigilant. You have to keep yourself well protected against threats of any kind. Even though they’re a pain, you need to apply your Windows updates when they become available, keep programs updated (such as Java) and make sure that you understand security basics.