Multiple staff at Guardian Australia, speaking on condition of anonymity, said it was an extremely frustrating situation.
“It feels like the comms strategy of providing minimal details is very much a decision coming out of London that we’ve just got to comply with,” one said.
“But it makes you wonder what on earth has actually happened if a hack has shut our offices around the world and takes us at least a month to fix.”
Another noted: “You probably know about as much as I do.”
News website Semafor reported the hack delayed UK payroll systems, hit company expenses, and some areas of the publisher’s UK print production were challenged. It also even initially shut down the tills in the UK office’s canteen.
A Guardian Australia spokeswoman said the publisher’s systems “have been subject to a serious network disruption”.
“We have been able to keep publishing our journalism, but a number of key IT systems have been affected,” she said.
“The work to restore our systems fully is ongoing and will take some weeks. We have asked most staff to work from home for the next three weeks to allow our technical teams to focus on essential technical work.”
Ransomware attacks involve malicious software that threatens to publish or blocks access to data or a computer system until a ransom is paid.
Cyberattacks are becoming increasingly common. Optus and Medibank were hit by major breaches over the past few months, while Nine, the publisher of The Australian Financial Review, was hit with a ransomware attack in March 2021.