Nearly four years since Stuxnet broke onto the scene, F-Secure has discovered another series of attacks against industrial control systems -- this time aiming at mostly European organizations. The attackers' ultimate motives are unclear. Researchers suspect they are simply gathering intelligence in preparation for a more serious attack. The attackers are infecting SCADA and ICS systems with the HAVEX remote access tool (mostly used for information gathering), using a unique infection vector. Once HAVEX is installed, it calls back to its command-and-control servers -- which are mostly unrelated third-party websites and blogs that the attackers have compromised -- and receives...