Six U.S. senators asked Yahoo! Inc. CEO Marissa Mayer to explain how theinternet company failed to notice a massive cyberattack at their company for two years.
While seeking information about the security breach, thesenators said in a Sept. 27 letter that it was "unacceptable" thatmillions of Americans' data was compromised for two years.
The letter was signed by Sen. Patrick Leahy, D-Vt.; Sen. AlFranken, D-Minn.; Sen. Elizabeth Warren, D-Mass.; Sen. Richard Blumenthal,D-Conn.; Sen. Ron Wyden, D-Ore.; and Sen. Edward Markey, D-Mass.
The letter follows a call by Sen. Mark Warner, D-Va., forthe SEC to investigate Yahoo over the cyberattack that affected atleast 500 million user accounts.