Security Essentials is a powerful antivirus solution created by Microsoft to protect your computer. The software provides protection against viruses, trojans, worms, and spyware.
Security Essentials uses a simple color-coded system to notify of your computer's threat level. Green means that your computer is safe, whereas yellow and red mean that there is a mild or severe threat, respectively. In the event that the software detects a threat on your computer, it will recommend a course of action to get rid of it.