Microsoft Security Essentials are for users who have genuine Window 7 installed on their system. I saw till date many people are not aware of such anti-virus Software from Microsoft. So, thought to write about it. Microsoft has worked on the basic of security for home users. It was always blamed for security problem for Window Operating System. Microsoft has listed to this and provided free Security Essentials. It has firewall and anti-virus software for home users.
To protect your PC and Laptop from Virus, download the Microsoft Security Essentials directly from MS site. It is very fast and does not much from your PC in term of memory etc. Though for Malware, this is not good enough. Try Malwarebytes if you have doubt about malware on your system.