"Unpatched systems are definitely still at risk".
Several prominent companies and services across the globe have already been impacted by this new ransomware,with computers locked up and displaying a distinctive red block of text asking for payment in Bitcoin. In Australia,local arms of international companies that have been affected are scrambling to stop the infection spreading.
Food giant Mondelez is among those hit,with its shutdown of all IT systems reportedly affecting the Cadbury factory it operates in Hobart. Australian staff at global law firm DLA Piper are facing similar troubles,told to come in to work as usual but to avoid turning on or using any computers.
Dan Tehan,federal minister for cyber security,said Australia and its Five Eyes partners were monitoring the situation.