Passenger Ferry Held for Hours After Suspected Russian Hack

European investigators are probing whether Russian military hackers breached computer systems on a vessel owned by MSC-Mediterranean Shipping Company SA, the world’s largest container shipping group, according to people familiar with the matter.

The ferry, operated by MSC’s Grandi Navi Veloci unit, was immobilized Saturday in the southern French port of Sète as it prepared to sail to Algeria, the people said. The vessel was held to allow French authorities to confirm that operational systems had not been compromised. It eventually departed Sunday morning.