BT Counterpane, formerly Counterpane Internet Security, Inc., is a company that sells managed computer network security services. The company was founded by American cryptographer Bruce Schneier in August 1999. Their "Enterprise Protection Suite" is a service package that includes network scanning, security device management and consulting services based on their "Managed Security Monitoring" service. BT Counterpane is the world's biggest network data security company.[1] The company was acquired by BT Group on 25 October 2006.