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The first data breach occurred on Yahoo servers in August 2013 [1] and affected all three billion user accounts. [2] [3] Yahoo announced the breach on December 14, 2016. [4] Marissa Mayer, who was CEO of Yahoo at the time of the breach, testified before Congress in 2017 that Yahoo had been unable to determine who perpetrated the 2013 breach. [5]
This is a list of reports about data breaches, using data compiled from various sources, including press reports, government news releases, and mainstream news articles. The list includes those involving the theft or compromise of 30,000 or more records, although many smaller breaches occur continually.
December 2016: Yahoo! data breaches reported and affected more than 1 billion users. The data leakage includes user names, email addresses, telephone numbers, encrypted or unencrypted security questions and answers, dates of birth, and hashed passwords
The Yahoo Voices breach occurred on July 12, 2012, when a hacking group calling themselves "D33DS Company" used a union-based SQL injection attack to gain unauthorized access to Yahoo's servers. [5] The attackers were able to extract and publish unencrypted account details, including emails and passwords, for approximately 450,000 user accounts ...
December 14, 2016: A separate data breach, occurring earlier around August 2013 is reported. This breach affected over 1 billion user accounts and is again considered the largest discovered in the history of the Internet. [152] The data taken is similar to the data breached earlier except that it had very weak password encryption.
The first announced breach, reported in September 2016, had occurred sometime in late 2014, and affected over 500 million Yahoo! user accounts. [43] A separate data breach, occurring earlier around August 2013, was reported in December 2016, and affected over 1 billion user accounts. [ 44 ]
Uber paid the hackers $100,000 for assurances the data was destroyed. [65] December 2016: Yahoo! data breaches reported and affected more than 1 billion users. The data leakage includes user names, email addresses, telephone numbers, encrypted or unencrypted security questions and answers, dates of birth, and hashed passwords
The threat of data breach or revealing information obtained in a data breach can be used for extortion. [16] Consumers may suffer various forms of tangible or intangible harm from the theft of their personal data, or not notice any harm. [91] A significant portion of those affected by a data breach become victims of identity theft. [82]