Mediterranean Shipping Co (MSC) has put its website and myMSC service back online after a possible malware attack.
The Swiss boxship giant went offline late on Thursday as a precaution after a network outage at one of its headquarter's data centres in Geneva.
MSC said the problem had been resolved and booking options are available again.
"The incident was confined to MSC’s headquarters in Geneva only and affected the availability of some of MSC’s digital tools and msc.com for a few days during the Easter holiday long weekend," the liner operator added.
"MSC agencies remained fully functional and continued serving customers as usual during this time."
While the company considers the incident resolved, it is staying cautious on its approach to information technology, to minimise risks to systems.
MSC, which operates 471 vessels, had kept in touch with customers on Twitter during the outage, and assured them bookings could still be made through its Inttra platform and calls to its offices.
Networks kept separate
"MSC operates different IT systems to separate headquarters from the agencies' network to ensure that in case of an issue they can’t affect each other," the company said.
On Tuesday, Danish pump maker DESMI said it would not succumb to blackmail by hackers who attacked its IT systems overnight on 9 April and demanded money to allow recovery of stolen data.
“Under no circumstances” will he pay a ransom, DESMI chief executive Henrik Sorensen said.
In November, London tanker owner James Fisher was the victim of an attack, more than two years after a high-profile NotPetya onslaught hit Maersk's digital network at a cost of $300m.
