Security? Yes, we've heard of it
So the government thinks that Kaspersky might be working for Russian intelligence? If they were a US corporation then it's likely that they would be working with the NSA so - maybe, maybe not - all AV companies have the potential for national security cooperation behind the scenes. But Booz Allen Hamilton have been leaking US secrets like a broken water main for years yet nobody ever suggests that it's way past time to hire a different contractor.
The Harold Martin case is interesting - there's not a lot of information around about it, and what there is doesn't make very much sense although I used to work with a bunch of folks in that area and a significant number of them were mentally out in the left field.