Download Microsoft Security Essentials 2.0 Beta
Microsoft has released the first beta of its new Security Essential software. The new Security Essential features an updated anti-malware engine which is better at both detecting and removing malware. Microsoft Security Essentials 2.0 Beta is directly integrated with the Firewall and gives users the option to either turn off the firewall or turn it on.
Another new feature is the integration with Internet Explorer. This will provide protection against web-based threats. There is also a new Network Inspection System to prevent network-based exploits. However, users of Windows Xp will not be able to enable the Network Inspection System.
To download it, go here and login using your Live account. After that you can download the beta - either in 32-bit or 64-bit. The beta is available on a first-come-first-serve basis until an alloted number has been reached. So, go grab yours quickly.
And before we end, it is available only to genuine Windows user and is available only in three languages - English (U.S.), Israel, and Brazilian Portuguese.
[source]