Report: Ransomware Attacks Involving Data Theft Are Surging
KnowBe4, Tuesday, October 13th, 2026
Zscaler data shows ransomware attacks with data theft rose 275% in 2026, with managers the most common victims.
KnowBe4 cites a Zscaler report finding ransomware attacks involving data theft surged 275% in 2026, with attackers exfiltrating more than 896.2 terabytes, over seven times the 2023-2024 amount, to strengthen extortion leverage.
Threat actors cite HIPAA, SEC disclosure rules and GDPR during negotiations to add pressure.
Most victims (62%) held managerial titles or above, reflecting social engineering aimed at higher-level employees.