Duqu 2.0

Duqu 2.0 is a version of malware reported in 2015 to have infected computers in hotels of Austria and Switzerland that were sites of the international negotiations with Iran over its nuclear program and economic sanctions. Kaspersky discovered the malware, and Symantec confirmed those findings. The malware is a variant of Duqu, and Duqu is a variant of Stuxnet. The software is "linked to Israel", according to The Guardian. The software used three zero day exploits, and would have required funding and organization consistent with a government intelligence agency.