A recent report from Bitsight highlights a measurable shift in cybersecurity hygiene for industrial operators. The data shows a 56 percent drop in the number of internet-exposed Automatic Tank Gauge (ATG) systems located within the United States. This reduction follows a series of warnings issued by federal agencies regarding the risks of leaving critical infrastructure hardware accessible via public networks.
ATG systems are essential for monitoring fuel levels in storage tanks, yet many units previously sat exposed on the open internet with default credentials or outdated firmware. These devices act as a bridge into larger operational technology networks. Security researchers identified these systems as prime targets for unauthorized access that could disrupt fuel supply chains or lead to environmental monitoring failures.
The decline in exposure suggests that facility managers and utility operators took the recent government guidance seriously. By removing these devices from public view or implementing firewalls, organizations have reduced the attack surface available to threat actors. This change represents a positive step in protecting essential energy infrastructure from remote exploitation.
Despite the progress, the work is not complete. Security teams must continue to monitor assets and ensure that all industrial control systems remain isolated from public-facing infrastructure. Regular audits and network configuration reviews are standard requirements for maintaining a defensive posture against emerging cyber threats.