Global Data Breach Costs Hit Record $4.99M as AI-Driven Attacks Surge 56%

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The 2026 IBM and Ponemon Institute Cost of a Data Breach Report reveals the global average breach cost has reached an all-time high of $4.99 million, a 12% increase from the previous year, with US breaches averaging $11.5 million. More than one in four malicious breaches now involve AI, a 56% year-over-year rise, with AI-enabled attacks costing an average of $6.04 million — about $1 million more than non-AI breaches. Deepfake impersonation and AI-powered malware are the leading attack methods, while critical infrastructure absorbed 62% of all AI-driven incidents. The mean time to identify and contain a breach climbed to 247 days, reversing five years of improvement, with prolonged breaches costing roughly $1.33 million more. Organizations that extensively deploy AI in their own defenses averaged $1.93 million less per breach, yet only 18% currently use AI agents for vulnerability management.

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