Log files submitted to a sampling of online forums show evidence that laptops and other systems used to connect to industrial control systems are infected with malware and Trojan horse programs. Log files were submitted by the computer s operator in an effort to weed out pesky malware infections. The logs reveal detailed configuration information about the systems in question, the organization it belonged to, and even the role of the individual who owned the system. The findings suggest critical infrastructure providers are vulnerable to attacks that take advantage of mobile workers and contractors that bring infected laptops and mobile devices into secure environments.
Source: https://threatpost.com/evidence-infected-scada-systems-washes-support-forums-090611/75620/