Yahoo, now part of Oath, confirmed on Tuesday that all three billion of its accounts were affected by the data theft breach back in 2013. The company previously disclosed the hack back on December 14, 2016.
At that time in 2016, Yahoo said that approximately one billion of the three billion accounts were affected. Now, after Verizon’s acquisition of Yahoo, new information surfaces, and Yahoo is now confirming that all three billion accounts were affected.
From the investigation, the company claims that user account information who were affected did not include information such as password, credit cards, or bank accounts.
Yahoo said in 2016 that it took necessary action in order to protects users’ accounts. The company notified users requiring to change passwords and security questions as well the answers. Yahoo is now taking the same appropriate precautions the company conducted back in 2013.
According to security academic experts, Yahoo was protected by outdated and easy to hack encryptions. They also said that the security questions and backup emails linked to the primary one allowed the hack to network into other accounts.
"Verizon is committed to the highest standards of accountability and transparency, and we proactively work to ensure the safety and security of our users and networks in an evolving landscape of online threats," said Chandra McMahon, Chief Information Security Officer, Verizon. "Our investment in Yahoo is allowing that team to continue to take significant steps to enhance their security, as well as benefit from Verizon's experience and resources.
Yahoo’s announcement comes after the recent major hack on Equifax in September. Originally, Equifax confirmed 143 million accounts may be affected, but on Monday, the firm said that another two million may have been affected.
The U.S. Securities and Exchange Commission has already probed into Equifax and had former CEO, Richard Smith, testify in front of Congress on Tuesday. Now the SEC will be launching a probe into Yahoo over the hacks.
On Tuesday, Senator John Thune, chairman of the U.S. Senate Commerce Committee, said he plans to hold a hearing later this month over massive data breaches at Equifax and Yahoo, according to Reuters.