Several reporters asked for our Stuxnet timeline, so here it is:

July 15, 2010
First heard about Stuxnet

August 26, 2010
Obtained copy of Stuxnet from the Internet and started lab analysis

September 8, 2010
Informed key people in the control system security community that Stuxnet is a cyber warfare weapon

September 13, 2010
Published that Stuxnet is a 100% directed attack

September 14, 2010
Published a step-by-step guide how to analyze Stuxnet in a lab environment, along with lab configuration details and video capture of Stuxnet traffic in Wireshark

September 16, 2010
Published first details on controller code injection, including the DEADF007 string
Published information on data blocks 890 and 8063
Published that Stuxnet’s target appears to be the Iranian nuclear program, especially the Bushehr nuclear power plant

September 17, 2010
Published an advisory that the control system vulnerabilities exploited by Stuxnet cannot be patched
Published recommended mitigation strategies for asset owners, vendors, and security companies to address the threat of Stuxnet-inspired malware

September 19, 2010
Informed DHS & INL about the threat posed by Stuxnet-inspired malware
Informed a US congressperson about the threat posed by Stuxnet-inspired malware

September 21, 2010
Technical briefing on Stuxnet by Ralph for the control system security community at WeissCon in Rockville, MD, especially focusing on how to address the threat of Stuxnet-inspired malware

September 26, 2010
In an interview with German nationwide TV (“Die Tagesschau”), Ralph says that potential targets for Stuxnet are the Bushehr NPP, the uranium enrichment facilities in Natanz, or both

October 11, 2010
Open letter to Symantec addressing their ill-informed assessment of the threat posed by Stuxnet-inspired malware, pointing out in detail why Stuxnet can be copied easily, and can be re-used by follow-up attackers without insider knowledge

November 13, 2010
Confirmed Symantec’s discovery that the 315 attack code manipulates a 6 x 31 drive array, eight hours after published by Symantec
Identified the K-1000-60/3000-3 steam turbine in the Bushehr NPP as the potential target for the 417 attack code

November 14, 2010
Published intelligence on attacker profiling, pointing out that a coalition of nation states appears to be behind Stuxnet, limiting the circle of suspects to Israel, USA, Germany, Russia

November 15, 2010
Published possible ways to destroy gas centrifuges with the 315 attack code, some of which are later supported by ISIS’ centrifuge expert David Albright
Published that the 417 attack code does a man-in-the-middle on the controller, feeding fake input data to the legitimate controller program

November 19, 2010
Published that the preparation for operation Myrtus must have taken several years

December 6, 2010
Announced mitigation tool for Stuxnet-inspired malware: The Langner Controller Integrity Checker