Read the first-person account by Igor Ashmanov who witnessed the whole incident. [1] Kaspersky's son was found not by FSB, he was found by the unit of Moscow police that was specifically created to deal with kidnappings, with cases like that one. If the story with the kidnapping proves anything, it proves the opposite, that he actually had NO any serious FSB connection.
[1] https://roem.ru/18-10-2017/261503/kaspersky-poprosil-dokazat... and following comments
Yeah, a really good and unbiased source you got there.
Do you have sources for this? Well-paid professional might not care about politics at all or might be OK with current regime because it doesn't interfere with their life. Furthermore, some of them might be even proud for occupying Crimea.
But I can agree that there is relatively high percent of anti-Putin people in Moscow.
I don't know about this particular story, but Kaspersky is certainly has strong ties with FSB, FSO and other official structures. I don't mean that it's their main business model — developing anti-virus software pays well enough not to be some cover story — but they're definitely _friendly_ on a deep personal level. Kaspersky himself was educated in KGB school, worked in government structures and has a lot of connections (which he used, for example, with that shady story when his son was kidnapped).
Usually, in Moscow, there is a strong correlation between being a highly educated, well-paid IT professional and having a negative opinion about current Russian regime; but judging from my second-hand stories from friends and colleagues, guys at Kaspersky tend to be very patriotic and pro-government. So, while I don't think that Kaspersky lab was founded deliberately like some sort of cover. But they're the kind of people who would definitely help FSB with whatever they ask — not because of some secret court order, but happily, thinking that they are serving their country and doing a good thing.