Yahoo, Equifax still don’t know who was behind their massive hacks

Two of the most impactful data breaches in history remain unsolved mysteries. Yahoo’s 2013 breach that impacted all 3 billion of the company’s users remains an open case, former CEO Marissa Mayer told the Senate Commerce Committee on Wednesday, testifying alongside to the interim and former CEOs of Equifax and a senior Verizon executive. Yahoo didn’t even know of the record-setting 2013 breach until a U.S. indictment in November 2016, more than three years later. An FBI investigation of the 2013 breach is ongoing. This year’s Equifax breach has smaller numbers (145 million people affected) but the data stolen is extremely sensitive and may end up causing more harm than Yahoo. Like Yahoo, the interim and former CEOs of Equifax don’t know who breached their company. There are now multiple ongoing federal investigations into both the breach and the company itself, interim CEO Paulino Barros told the committee. Yahoo’s 2014 breach, which impacted 500 million users, […]

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