Believing that they are uncorrupt by the government secret services is naive.
Everything in Russia of any value has eyes of secret govt service on it. If the state men ask you for cooperation, you cannot say no, or your life as a person will be destroyed, and you (as an owner) lose the business too (multiple examples in all areas of technology, science and industry).
I get that, but I am looking for specific examples. Suspicions without proof aren't worth a whole lot to me.
Kaspersky has been in the game for quite some time, and Russian secret services aren't exactly known for their discretion. So there must have been some kind of incident by now.