Alastair MacGibbon, the deputy secretary and national cyber security advisor at the Department of Home Affairs and the head of the Australian Cyber Security Centre (ACSC) since December 2017 has resigned in order to return to the private sector.
He will officially leave the Australian Signals Directorate (ASD), the body that incorporated ACSC, on 28 May.
His resignation was announced by ASD Director-General Mike Burgess on Saturday, who described him as leaving a “considerable legacy” and responsible for helping “raise the nation’s cyber security standards”.
“I’d also like to recognise and thank Alastair for his tireless work in tackling the challenge of helping those we serve to better understand how to identify and manage the nation’s cyber security risks more effectively,” Burgess added.
MacGibbon was the founding director of the Australian High Tech Crime Centre in the early 2000s.
He then left a year-long stint as Dimension Data’s general manager for security to become Australia’s first eSafety Commissioner in 2015.
A year later, he was appointed by the-then Prime Minister Malcolm Turnbull to the role of special adviser to the Prime Minister on Cyber Security, with in the Department of the Prime Minister and Cabinet.
He took on his final dual roles at the end of 2017 as the ACSC was absorbed into the ASD.
Lieutenant general John Frewen, principal deputy director-general at the ASD, will lead the ACSC in the interim period until MacGibbon's role is permanently filled.
“One of the biggest challenges for Australia in cyber security sits with the private sector and in particular those who own and operate critical infrastructure. Indeed most of the cyber security heavy lifting is done by the private sector,” Burgess added. “Alastair’s decision to return to the private sector means he is not lost to this important cause.”