The attacks reportedly focused on Automatic Tank Gauge (ATG) systems, which are used to monitor fuel levels, detect leaks, and manage fuel storage operations at gas stations and fuel depots.

Sources familiar with the investigation said many of the affected systems were connected to the internet without strong password protection, making them vulnerable to hackers seeking easy access to critical infrastructure.

Officials said the hackers were able to interfere with fuel display readings in some systems, but there is currently no evidence that they altered actual fuel supplies, caused shortages, or triggered dangerous leaks.

Cybersecurity experts warned that such breaches could still pose serious risks, as compromised systems might allow attackers to hide leaks, disrupt fuel operations, or create panic by manipulating fuel data.

U.S. authorities are continuing investigations into the attacks while increasing monitoring of energy infrastructure, amid growing concerns over foreign cyber threats targeting critical American systems.