Danish logistics and energy firm Maersk has upgraded cyber security following a malware attack.
In a statement the conglomerate, which has operations worldwide, revealed that the malicious software was a “new” virus.
However no data was stolen or loss.
The statement to customers added: “This virus attack was a previously unseen type of malware, and updates and patches applied to both the Windows systems and our antivirus were not an effective protection in this particular case.
“Once our service has returned to more normal conditions, we will conduct a full post-mortem.
“Thereafter, we will engage closely with customers and partners to share lessons from this incident and ensure you can benefit from our learnings. We have truly appreciated the numerous offers of assistance that we have received from customers during this process.
“We remain determined in our path toward full recovery, which will see us serving your business and your shipping needs effectively again.”