Ransomware Surges, Extortion Escalates: Threatlabz 2025 Ransomware Report
Zscaler, Tuesday, July 29th, 2025
Ransomware remains one of the most persistent threats facing enterprises and public sector organizations. The latest research from ThreatLabz confirms that attacks are not only increasing in volume, but also shifting toward more targeted, data-driven extortion tactics.
The newly released Zscaler ThreatLabz 2025 Ransomware Report examines year-over-year spikes in ransomware activity blocked by the Zscaler cloud and a significant rise in public extortion cases. Together, these findings point to a critical reality: today's ransomware threat landscape demands a new level of operational vigilance and a fundamentally different security architecture than traditional security models provide.
This blog post highlights select insights from the report.