Forescout Reports Surge in Cyber Threats as AI Accelerates Vulnerability Exploitation — Forescout Technologies Inc.

Event summary

Forescout's 2026H1 Threat Review identified a 51% year-over-year increase in published vulnerabilities, totaling 37,137.
Ransomware attacks rose by 25%, with 4,544 incidents reported in the first half of 2026.
Threat actors from China, Russia, and Iran accounted for 32% of notable activity updates.
Vedere Labs tracked over 5,700 hacktivist attack claims across 98 Telegram channels.

The big picture

Forescout's report highlights how rapid AI advancements are reshaping the cyber threat landscape, outpacing traditional security measures. The surge in vulnerabilities and ransomware attacks underscores growing risks for critical infrastructure sectors amid escalating geopolitical tensions. Organizations must prioritize asset visibility and network segmentation to mitigate expanding attack surfaces.

What we're watching

AI Threat Acceleration: How AI will continue to enable faster vulnerability discovery and exploitation beyond current security team capabilities.
Geopolitical Cyber Risks: Whether state-aligned cyber activity will intensify as global tensions escalate, particularly targeting critical infrastructure sectors.
Supply Chain Vulnerabilities: The pace at which threat actors exploit software supply chain compromises and specialized device vulnerabilities.