Carnival’s latest cyber breach lands with an uncomfortable sense of déjà vu, as the world’s biggest cruise operator again finds itself explaining how customer data slipped into criminal hands. The company has confirmed a cyber incident affecting its systems that has exposed personal information belonging to nearly 6 million customers. The disclosure follows claims by the ShinyHunters group that it stole millions of records and terabytes of corporate data in an April intrusion. For Carnival, the incident adds to a growing number of cybersecurity incidents the company has suffered. That backdrop matters because it raises questions about whether lessons from repeated cyber incidents are translating into stronger defenses or if threat actors are simply getting smarter. Another ShinyHunters breach impacts millions According to a filing made with the Maine Attorney General’s Office , the incident occurred on April 10 but wasn’t noticed until four days later, on April 14.…