washington thirty-six u.s. senators tuesday call federal authorities investigate sale nearly million share credit bureau equifax inc company executives massive data breach one compare action insider trade lawmakers sign letter ask u.s. department justice securities exchange commission federal trade commission look 1.8 million stock sales three executives july 29 day equifax say learn systems hack mid-may make public last week happen somebody need go jail senator heidi heitkamp democrat senate bank committee say credit union industry conference washington problem people act impunity consequences insider trade cyber security experts believe breach one large data hack ever disclose wall street tuesday equifax close 2.5 percent high 115.96 slightly reverse 21 percent slide since hack report opinion piece usa today equifax chief executive officer richard smith apologize breach vow company make change say 15 million people visit firm support website 11.5 million enrol credit monitor identity theft protection company first think intrusion limit smith say equifax hire cybersecurity firm spend thousands hours investigate inform public six weeks breach discover say devote extraordinary resources make sure kind incident happen smith say smith address stock sale issue letter lawmakers lead jack reed democrat john kennedy republican request thorough examination unusual trade include atypical options trade violations insider trade law request spare effort investigations enforce law full extent lawmakers say federal bureau investigation already say investigate equifax hack spokesman sec chairman jay clayton decline comment act ftc head maureen ohlhausen decline say agency investigate breach try get handle scope certainly take seriously tell reporters antitrust conference agency historically probe big breach sue company sloppy protect consumer data breach also prompt expressions concern u.s. treasury secretary steven mnuchin massachusetts attorney general say state plan sue hackers pilfer name birthdays address well social security driver license number treasure trove identity thieve data 143 million people may expose follow revelations stock sales chief financial officer john gamble two people equifax say statement last week executives aware intrusion occur sell share massachusetts attorney general maura healey say intend sue equifax allegations fail maintain appropriate safeguard protect customers data include nearly three million massachusetts residents years investigate data breach may brazen failure protect consumer data ever see healey say statement equifax initially appear offer credit monitor breach victims forfeit right file lawsuit new york attorney general a.g. schneiderman say tuesday equifax remove language website u.s. treasury secretary steve mnuchin tuesday call equifax breach quite unfortunate insist top priority make sure financial data safe concern global financial system keep safe say cnbc institutional investor deliver alpha conference new york equifax respond reuters request comment u.s. senator equifax hack 'somebody need go jail