Security still remains the top concern for most companies thinking about the Cloud. This paper goes through the security and controls built into Hightail to ensure that company information is kept safe. Controls for users include passwords and file expiration to prevent unauthorized access of shared content. Controls for admin help configure rules and oversee companywide file sharing. The paper also discusses in detail the multi-level security infrastructure put in place by Hightail to keep information safe while in transit and at rest.