IBM Report: Shadow AI Now Costs Breached Companies $670,000 More, Fueling Governance Crisis

Nearly half of data-breached organizations in 2026 involved unsanctioned artificial intelligence tools, according to IBM's latest Cost of a Data Breach Report—double the rate from 2025. The report, which analyzed 602 breaches worldwide across March 2025 to February 2026, found that shadow AI incidents raised breach costs to an average of $5.39 million, compared with $4.70 million for breaches without unsanctioned AI use. The $670,000 premium reflects both direct recovery expenses and the cascading risk of data exposure.