Data leak/loss prevention

Data loss/leak prevention solution is a system that is designed to detect potential data breach / data ex-filtration transmissions and prevent them by monitoring, detecting & blocking sensitive data while in-use (endpoint actions), in-motion (network traffic), and at-rest (data storage)

Some other terms associated with Data Leakage Prevention are
Information Leak Detection and Prevention (IDLP),
Information Leak Prevention (ILP),
Content Monitoring and Filtering (CMF),
Information Protection and Control (IPC),
and Extrusion Prevention System (EPS)

http://en.wikipedia.org/wiki/Data_loss_prevention_software

• With Symantec Data Loss Prevention, you can discover where data is stored across your cloud, mobile, and on-premises environments; monitor how it’s being used on and off your corporate network; and protect it from being leaked or stolen

http://www.symantec.com/data-loss-prevention/

• McAfee Total Protection for Data Loss Prevention (DLP) safeguards intellectual property and ensures compliance by protecting sensitive data wherever it lives—on premises, in the cloud, or at the endpoints. McAfee Total Protection for DLP is delivered through physical or virtual low-maintenance appliances and the McAfee ePolicy Orchestrator platform for streamlined deployment, management, updates, and reports.

http://www.mcafee.com/us/products/total-protection-for-data-loss-prevention.aspx

• Data Loss Prevention Software Blade

Check Point Data Loss Prevention (DLP) Software Blade combines technology and processes to revolutionize DLP, helping businesses to pre-emptively protect sensitive information from unintentional loss, educating users on proper data handling policies and empowering them to remediate incidents in real-time
http://www.checkpoint.com/products/dlp-software-blade/