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WaterISAC and EPA have released the latest quarterly edition of the National Security Information Sharing Bulletin (ISB), developed for water and wastewater utilities.

Download bulletin: WaterISAC-EPA-Bulletin-Q1-2026.pdf

Highlights:

  • Ransomware continues to test defense-in-depth for critical infrastructure in 2025. 3810 across US, which is over 50% of worldwide.
  • Peer advisory for Water and Wastewater operators and network defenders focusing on ownership & accountability, asset management, network segmentation, continuous monitoring, insider threats and Incident Response Planning (IRP) testing.
  • Case study of a recent terrorist plot to poison local water supplies in India that was disrupted by authorities.