CWmike writes "Iran's Brigadier General, Gholam Reza Jalali, accused Siemens on Saturday with helping US and Israeli teams craft the Stuxnet worm that attacked his country's nuclear facilities. 'Siemens should explain why and how it provided the enemies with the information about the codes of the SCADA software and prepared the ground for a cyber attack against us,' Jalali told the Islamic Republic News Service. Siemens did not reply to a request for comment on Jalali's accusations. Stuxnet, which first came to light in June 2010 but hit Iranian targets in several waves starting the year before, has been extensively analyzed by security researchers. Symantec and Langner Communications say Stuxnet was designed to infiltrate Iran's nuclear enrichment program, hide in the Iranian SCADA (supervisory control and data acquisition) control systems that operate its plants, then force gas centrifuge motors to spin at unsafe speeds. Jalali suggested that Iranian officials would pursue Siemens in the courts, and claimed that Iranian researchers traced the attack to Israel and the US. He said information from infected systems was sent to computers in Texas."