In February 2017, following 9 months of security based upgrades, reviews and auditing, NYnet has achieved the distinction of being awarded the highly prestigious CAS(T) accreditation. Not only is NYnet one of the smallest organisations to be awarded such a distinction but it was achieved under budget and very quickly. The CESG Assured Service (Telecoms) is a CESG assurance scheme for ‘Next Generation’ network providers operated by the National Cyber Security Centre (NCSC), part of GCHQ. It provides assurance that a network is built, operated, and managed sufficiently for it to be used for handling Official Data. CAS(T) is built upon ISO27001 with additional mandatory aspects.