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Former Yahoo! CEO Marissa Meyer apologizes for 2013 data breach

Photo by Alex Wong/Getty Images(NEW YORK) -- Former Yahoo! CEO Marissa Mayer testified apologized for the 2013 data breach that impacted more than three billion Yahoo! accounts.

Mayer testified before the Senate Commerce Committee on Wednesday, alongside former Equifax CEO Richard Smith and Interim Exquifax CEO Paulino Barros, Jr. and Verizon Deputy General Counsel and Chief Privacy Officer Karen Zacharia. During her opening remarks, Mayer said Yahoo! had "worked hard over the years to earn our users' trust. As CEO, these thefts occurred during my tenure and I want to sincerely apologize to each and every one of our users."

Mayer said she didn't know about the intrusion in 2013. That admission came when she was asked why the company waited until November 2016 to publicly disclose the breach.

She also admitted that Yahoo! still doesn't "exactly understand how the act was perpetrated."

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