Ransomware Data Theft Surged 275% in 2026: Schools, Hospitals, and Government Agencies Had Some of the Largest Claims

Data exfiltrated by leading ransomware groups jumped 275.8% year over year to 896.2 terabytes, according to the Zscaler ThreatLabz 2026 Ransomware Report. That is more than seven times the volume recorded during the 2023–2024 reporting period. As organization