Keeping your internet-connected devices free from malware and infections makes the internet safer for you and more secure for everyone. 

The Keep a Clean Machine campaign is an ongoing effort to help everyone understand the importance of protecting internet-connected devices from malware and infections – especially malware that connects your devices with botnets.

What Are Botnets? Botnets are networks of personal computers infected by malware and remote controlled by criminals. Botnets are used to send junk email (spam), attack websites and distribute more malware, among other things. 

The malware used by botnets can infect your computer, turning it into a “bot” or “zombie,” meaning your computer can become part of the botnet and help criminals do their dirty work. 

To learn more about botnets, visit Microsoft Security’s Botnet page and read the “Botnets 101: Everything You Need To Know” blog from StopBadware and the National Cyber Security Alliance.


Keep a Clean Machine 

· Keep security software current: Having the latest security software, web browser and operating system are the best defenses against viruses, malware and other online threats.
· Automate software updates: Many software programs will automatically connect and update to defend against known risks. Turn on automatic updates if that’s an available option.
· Protect all devices that connect to the internet: Along with computers, smartphones, gaming systems and other web-enabled devices also need protection from viruses and malware.
· Plug & scan: “USBs” and other external devices can be infected by viruses and malware. Use your security software to scan them.