Whatever happens inside these locations "never happened" so to speak. Ironclad plausible deniability.
I've seen several comments from software engineers saying that they'd love to join the cyber fight but won't because doing so is, of course, illegal.
But San Francisco has a consulate, and so it got me thinking about this option.
Ukraine is now openly calling for international volunteers to support both combat and cyberwarfare operations. Perhaps they'd be amenable to allowing some of the best hackers on the planet through their doors to fight with impunity.
I'm not encouraging people to do this, more just a morbid curiosity about the mechanics and plausibility of it as a strategy. We're seeing a whole lot of technological elements we (or at least most people) have never seen in war over the past few days.
(As the thread points out, public perception and the willingness of prosecutors to go after you are probably more relevant from a mechanics/plausibility standpoint.)
going to Ukraine is a whole other matter.