next week we will see ceo andrew whitty, up on capitol hill testifying before congress on this cyber attack. but again "the washington journal" reporting that it started earlier than the company said, on february 12th the company first revealed it had begun on february 21st. back to you. >> thank you, bertha coombs. >>> we are getting started here on closing bell. up next, what's at stake for big te tech. investors awaiting results from the top names, big ones are reporting this week. also one big red flag in that space. where after the break. we're live from the new york stock exchange. you're watching "closing bell" on cnn. ♪(serene music)♪ medical discovery is like finding the right stone. ♪(stone skips on the lake)♪ and watching your discovery inspire further discoveries. ♪(string section building up)♪ dana-farber's momentum of discovery has changed cancer treatment everywhere. people aren't just living with cancer. they're living beyond it. ♪(orchestral music)♪ ♪(soft jingle)♪ [thunder rumbles] ♪ ♪ ♪ ♪ the biggest ideas inspire new ones. 30 years ago, state street created an etf

. >> on wednesday united health grp o andrew whitty testifies on the recent cyber atta ainst the company and its impact on healthcare providers and patient data. watch the house energy and congress of committee live at 2 p.m. eastern on c-span three. our free mobile video app or online at c-span.org. >> c-span is your unfiltered view of government, funded by these television companies and more including wow. >> saturdays, watch american history tv congress investigates as we explore major investigations in our history by the u.s. house and senate. each week authors and historians will tell the stories , we see historic footage and examine the impact and legacy of key congressional hearings. this week, the 1975 senate committee hearings led by idaho democratic senator examining alleged abuses within the u.s. intelligence community. watch congress investigates saturdays at 7 p.m. eastern.