Major tech companies have been growing internal crime-fighting cyber teams, often staffing them with former law enforcement agents. NPR gets a look inside one of these units.
Yahoo says the massive hack, previously said to have affected 1 billion accounts, in fact likely compromised 3 billion accounts. However, the company says corrective actions have already been taken.
Verizon has completed its $4.5 billion acquisition of Yahoo, folding it and AOL into a digital media subsidiary called Oath. Mayer is expected to receive a $23 million golden parachute as she exits.
The digital content mashup of Internet oldsters will be led by Tim Armstrong, AOL's CEO. Though the Yahoo deal was widely panned, it gives Verizon a vast subscriber base appealing to advertisers.
A probe by an independent board found that Yahoo senior executives failed to "properly comprehend or investigate" a 2014 security breach. There was a separate breach in 2013.
The company says the intruders accessed names, email addresses, phone numbers, dates of birth and even security questions. This is the second major hack announced by Yahoo in less than three months.