Cyber security expert says Ukrainian hackers are breaking into Russian networks

https://www.nbcnews.com/now/video/cyber-security-expert-says-ukrainian-hackers-are-breaking-into-russian-networks-stealing-data [login to see] 84?cid=referral_taboolafeed
An American cyber security expert tells NBC News that Ukrainian hackers are launching a serious campaign on Russia to deter any cyber attacks. These hackers have broken into sensitive Russian networks and stolen critical data, all while bombs are dropping in Kyiv.