Deloitte sends out teams to help companies recover data and network capabilities in the midst of cyber attacks. After NotPetya struck, a Deloitte team launched a recovery operation for A.P. Moller-Maersk A/S, the world's largest container shipping company. The attack left Maersk's container ships stranded at sea, closed ports, and ruptured communications. Within 10 days, Maersk reinstalled its entire computer infrastructure, including 4,000 servers and 45,000 PCs, according to Chairman Jim Hagemann Snabe.