Experts say all signs point to Russia as the source of a massive cyberattack targeting federal agencies and some Fortune 500 companies. But how did they do it, and how did it go undetected for months? NBC senior Washington correspondent Andrea Mitchell reports for In Depth TODAY. » Subscribe to TODAY: http://on.today.com/SubscribeToTODAY » Watch the latest from TODAY: http://bit.ly/LatestTODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: http://on.today.com/ReadTODAY Find TODAY on Facebook: http://on.today.com/LikeTODAY Follow TODAY on Twitter: http://on.today.com/FollowTODAY Follow TODAY on Instagram: http://on.today.com/InstaTODAY Follow TODAY on Pinterest: http://on.today.com/PinTODAY #Cyberattack #FederalAgencies #TodayShow Cyberattack On Government Agencies Is Source Of Growing Fears | TODAY
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