Kaspersky has acknowledged that code belonging to the US National Security Agency (NSA) was lifted from a PC for analysis but insists the theft was not intentional. From a report: In October, a report from the Wall Street Journal claimed that in 2015, the Russian firm targeted an employee of the NSA known for working on the intelligence agency's hacking tools and software. The story suggested that the unnamed employee took classified materials home and operated on their PC, which was running Kaspersky's antivirus software. Once these secretive files were identified -- through an avenue carved by the antivirus -- the Russian government was then able to obtain this information. Kaspersky has denied any wrongdoing, but the allegation that the firm was working covertly with the Russian government was enough to ensure Kaspersky products were banned on federal networks. There was a number of theories relating to what actually took place -- was Kaspersky deliberately targeting NSA employees on behalf of the Kremlin, did an external threat actor exploit a zero-day vulnerability in Kaspersky's antivirus, or were the files detected and pulled by accident? According to Kaspersky, the latter is true. On Wednesday, the Moscow-based firm said in a statement that the results of a preliminary investigation have produced a rough timeline of how the incident took place. It was actually a year earlier than the WSJ believed, in 2014, that code belonging to the NSA's Equation Group was taken.