including some here in the united states, between 2012 and 2018. the fourth person was someone working for the russian ministry of defense, a research institute. they were helping with a hack in saudi arabia. so what this does is really raise the fears of what could happen now, because it's clear that they have targeted critical infrastructure in the past. they know that. now we're getting these extremely stark warnings from the biden administration, from the very top, from president biden himself, who said that the magnitude of russia's cyber capacity is fairly consequential and it's coming. the president saying that russian cyberattacks are coming. now, there's a difference when it comes to hacking in terms of espionage like the solarwinds hack where we saw russians going after government systems to spy, and then there are hacks that are designed to be destructive. what the fbi has warned is they have seen what's called scanning, where these hackers scan for vul never vulnerabilit.