APM's website was difficult to reach and phones at its headquarters in The Hague and offices in Rotterdam went unanswered. A spokeswoman for the company in Copenhagen confirmed its systems were "impacted" as part of Maersk's IT infrastructure. The RTV report said computers were infected by ransom ware that encrypted their hard drives. The broadcaster published an image of the screen of an affected machine with a message demanding a $300 payment. With more than 600 vessels and 30,000 employees, Maersk is among the key players in global trade, handling some 15 percent of the world's container transport capacity.