Saudi authorities announced to have detected an advanced cyber attack targeting the kingdom. The attackers leveraged the Powershell, but at the time of writing Government experts it did not comment on the source of the attack. The most clamorous attack was conducted with the Shamoon wiper in 2012 against computers in the Saudi energy sector in 2012. In January, the Saudi Arabian labor ministry had been attacked and also a chemical firm reported a network disruption. The NCSC speculates the involvement of an APT that used spear phishing attacks to infiltrate computers.”]
Source: http://securityaffairs.co/wordpress/65952/cyber-warfare-2/saudi-arabia-apt.html