New revelation on British GCHQ confirms the existence of the HACIENDA Port Scanning Program. Program is targeting systems in 27 countries and looking for vulnerable network infrastructure to exploit. The program is shared by the GCHQ with other Intelligence agencies of the Five Eyes. The most common scan mode used by hackers of GCHQ is the TCP Stealth mode. The massive use of this technology can make any server anywhere, large or small, a target for criminal state computer saboteurss.”]
Source: http://securityaffairs.co/wordpress/27598/hacking/hacienda-gchq-port-scanning.html