This is the big one, boys and girls. This is the case tied to Kaspersky. > But he had installed on his home computer antivirus software made by Kaspersky Lab,

This is the big one, boys and girls. This is the case tied to Kaspersky. > But he had installed on his home computer antivirus software made by Kaspersky Lab, a top Russian software company, and Russian hackers are believed to have exploited the software to steal the documents, the officials said. > It is not clear whether anyone at Kaspersky Lab was aware of the document theft. The company has acknowledged finding N.S.A. hacking software on a customer’s computer and removing it, but says the material was subsequently destroyed. It has denied that it works with Russian intelligence. > The sensitivity of the case was evident on Friday, when one courtroom official described the charges against Mr. Pho as “super-sealed” before the hearing. The aggressive hacking of American targets by the Russian government, including the Democratic National Committee during last year’s election campaign, is a high-priority concern for the United States, and forensic information from Mr. Pho’s computer might provide useful clues.