Yes, Microsoft is committed to the security and privacy of our data. Microsoft applies enterprise-grade standards and processes that have come with 30+ years of experience. Live@edu securely stores data with multiple datacenters around the world and does not show 3rd party ads in the email interface. Also, Live@edu services are engineered with essential controls for Education, such as bad word filter, anti-bullying or closed campus functionality. Check out Securing Microsoft Cloud Infrastructure (http://www.globalfoundationservices.com/security/documents/SecuringtheMSCloudMay09.pdf) for more information.