Kaspersky admits it did indeed collect secret NSA documents, but it was never intentional. Company says the collection process was automatic, as the documents were hacking tools detected under signatures tied to malware the company believed it belonged to a cyber-espionage group it was investigating at the time. The company says this employee reported the files to the company’s CEO after realizing that he might have discovered the source code of NSA tools. CEO ordered files to be destroyed, but specified it did not share the files with any third-party.
Source: https://www.bleepingcomputer.com/news/security/kaspersky-gives-its-side-of-the-story-on-how-the-nsa-lost-some-its-hacking-tools/