The problem with that is that those agencies also lie all the time. You can't have your cake and eat it too with a just trust us attitude and also make stuff up when it's convenient.
"We'll know our disinformation program is complete when everything the American public believes is false." - William J. Casey, former CIA Director
That said, I think the safest default assumption is both that any large national intelligence agency lies all the time, and also that any entity that a national intelligence agency has the means and motive to compromise is probably compromised. So Kaspersky is probably an FSB asset (but so too is Amazon a CIA/NSA asset) but the CIA is probably lying 99% of the time too.
