The internet company, now part of Verizon Communications Inc.'s (VZ), said in 2016 that the data theft had likely affected over 1 billion accounts. It also extended complete cooperation with law enforcement in its investigation of the breach.
If you are a Yahoo user, information such as your names, email addresses, telephone numbers, dates of birth, encrypted passwords and, in some cases, encrypted or unencrypted security questions and answers was accessed by the hackers then.
We are writing to update you about a data security issue Yahoo previously announced in December 2016. Yahoo did notify its users to change passwords and take precautions with their account details as it took action to protect their accounts.
Senate Intel Heads Say Trump-Russia Collusion Still an Open Question
The investigation has so far featured dozens of interviews and thousands of pages of transcripts, he said. Burr and Warner may divulge more information about social media's role in the election.
The first, in 2013, was believed to be the largest reported data breach ever, involving the theft of data associated with more than one billion user accounts. This also affects those who have A Yahoo Fantasy Sports account. The company had estimated the number to be one billion, which has been increased to three billion.
Yahoo said in a news release that it "obtained new intelligence" with the help of of "outside forensic experts". Last year, the company confirmed that a 2014 hack made account information from 500 million users available.
Yahoo said today that it only recently became aware of the scope of the breach, during the integration of Yahoo data inside Verizon's infrastructure.
Consider using Yahoo Account Key, an authentication tool that eliminates the need to use a password on Yahoo altogether. Chandra McMahon, chief information security officer of Verizon, said the telecoms company's investment in Yahoo was allowing the team to take "significant steps to enhance their security, as well as benefit from Verizon's experience and resources".