Proper noun
(Canada) Canada Education Savings Grant—a subsidy provided by the federal government of Canada to Canadian residents enrolled in an RESP (Registered Education Savings Plan), in order to help defray the costs of higher education for the enrollee's children.
(Britain) Communications-Electronics Security Group—A branch of the British intelligence agency, GCHQ (Government Communications Headquarters).
Source: en.wiktionary.orgCurrently there are two main components of the GCHQ, the Composite Signals Organisation (CSO), which is responsible for gathering information, and the CESG, which is responsible for securing the UK's own communications. Source: Internet
Mike has also been a Microsoft Certified Database Manager and registered consultant with the CESG Listed Advisor Scheme (CLAS). Source: Internet