We are also a Public Services Network (PSN) Service Provider (PSN SP) offering Protected WAN Overlay services. In delivering our Protected WAN Overlay service we have developed a Sub Certificate Authority (Sub-CA) to deliver a Public Key Infrastructure (PKI) service for PSN. This is available to both customers and other PSN SPs who appreciate the cost effective solution and Thales reputation for security management. Our Protected WAN Overlay Services include the PSN Certified Inter-Provider Encryption Domain (IPED). This allows Thales customers to exchange and share encrypted data across PSN with other parts of the public sector; an important part of establishing a common environment to improve cross government information management.