Hacks, thefts, and disruption: The worst data breaches of 2025

TechCrunch's year-in-review recounts major 2025 cybersecurity incidents: nation-state breaches of U.S. government systems and courts, a massive DOGE-related federal data exposure, Clop's large-scale exploitation of an Oracle E-Business zero-day to steal executive and employee records from dozens of organizations, supply-chain breaches that exposed up to a billion Salesforce-linked records, disruptive hacks against U.K. retailers and Jaguar Land Rover that caused prolonged outages and economic damage, and widespread breaches in South Korea including SK Telecom and a 33M-customer theft at Coupang.