"SysWatch Personal for Microsoft® Security Essentials: SafenSoft SysWatch Personal protects your computer proactively by controlling how applications behave. It keeps your whole system in a «known-good» state, preventing hacker attacks and malicious software from activating. SafenSoft SysWatch Personal works great combined with Microsoft® Security Essentials software." http://www.safensoft.com/home/free/personal/ I haven't tried it yet with MSE. I does provide you a key for Syswatch. Unsure if you have to have MSE installed or not. Might not be a bad combo. I do remember the last time I tried to install, it took forever. Still not too bad for free.