The report, released Thursday by the DHS’s Industrial Control Systems Computer Emergency Readiness Team (ICS-CERT), gives scant details on the incident, except to say that after Stuxnet was discovered on thousands of computer systems around the world in 2010, a DHS team “conducted an onsite incident response deployment to a manufacturing facility infected with the Stuxnet malware and helped the organization identify all infected systems and eradicate the malware from their control system network.”

The worm was found on “all their engineering workstations as well as several other machines connected to the manufacturing control systems network,” the report said…

“This very clearly shows the inherent danger of cyber weapons, especially when they function autonomously,” Kaspersky Labs senior researcher Roel Schouwenberg told ABC News.