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It's Rico Daily. I'm Adam Clark Estus.

Russian troops invaded Ukraine last week, in a shocking display of force not seen in Europe

since World War II. Good morning from the Ukrainian capital, Kiev, gunfire and explosions have

been heard here and in the second city of Kharkiv. The Russian military launched more than

a hundred ballistic and cruise missiles into Ukraine last night. Overnight in the capital of

Ukraine, the sound of missile strikes and air sirens. But Russia didn't just attack with tanks,

bombs and troops on the ground. This war is playing out in cyberspace as well. In fact,

Russia has been mounting increasingly serious cyber attacks against Ukraine for years.

Kim Zetter is a cybersecurity journalist and author of Countdown to Zero Day. She joins us now to

discuss what Russian hackers have been up to in Ukraine and what may be to come. Hi, Kim. Thanks

for joining us. Thanks for having me. Well, the full-scale invasion of Ukraine has taken Russia's

aggression to the next level. But in terms of cyber warfare, Russia has been attacking Ukraine for

a while now, right? Yes, we don't call it cyber warfare, though. I'm very reluctant to ever use

that term, except when it's actually accompanying conventional warfare. Yes, Russia has been

attacking Ukrainian systems for a long time in varying degrees. It sort of comes in waves and

we've seen, you know, sort of significant actions in 2014 around the time of the Ukrainian

...