It is, however, correct to attribute all sabotage and random failures to Russia until proven otherwise. No matter if we like it or not, Russia has decided to be hostile, and is actively committing sabotage.
It would be foolish to still just wring our hands about it. We have to name the enemy, Russia, and both support Ukraine's fight and do our own active hybrid actions on Russian soil. And yes, military buildup is required.
And to be clear, this will not end anytime soon. The war in Ukraine is but one aspect of Russia's imperial ambitions. It's fully possible we will not see friendly relations again in our lifetimes.