JCPenney - 368,418 breached accounts

In June 2026, retailer JCPenney and associated brands were targeted in a ShinyHunters “pay or leak” extortion campaign . Data allegedly obtained from JCPenney through the exploitation of a critical zero-day vulnerability in Oracle PeopleSoft was later published publicly. The exposed records indicated they primarily related to internal HR systems and impacted current and former employees.