Your VLAN Isn't an Air Gap: Six Hard Truths from the New CI Fortify Guidance
Check Point, Monday, August 3rd, 2026
Check Point draws six hard truths from new CI Fortify guidance after 30 Minnesota water systems were attacked.
Check Point analyzes new CI Fortify guidance issued after a coordinated cyber attack hit more than 30 community water systems in Minnesota over two days in late July.
Within days of the attack, the Five Eyes told critical infrastructure operators to be prepared to disconnect systems entirely.
The article's central point is that a VLAN is not an air gap, and that many operators overestimate the isolation their network segmentation provides. Check Point sets out six practical conclusions for critical infrastructure defenders.