The Department of Homeland Security warns of an increasing security risk to industrial control systems. The latest warning stemmed from a report of a vulnerability found in ICS equipment sold by 261 manufacturers. The vulnerability of control systems comes as interest in the devices has grown among hacktivist and anarchist groups. Whether disclosing weaknesses is making the systems less secure is unclear. Supporters say it forces vendors to move faster in fixing problems that most hackers already know exist, others are not so sure. Until a fix is released, the agency advises taking affected systems off a network that is connected to the Internet.”]