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

Reported by Zscaler ThreatLabz (Adam Ford (Chief Technology Officer))

Summary by Cyber Security News1 Oct 2026, 18:19 CEST

About this summary. This is a short, independently written summary of an article first published by Zscaler ThreatLabz. Cyber Security News did not report or verify the underlying story. Read the original: https://www.zscaler.com/blogs/security-research/ransomware-data-theft-surged-275-2026-schools-hospitals-and-government

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.

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