Four years later, Yahoo still doesnât know how 3 billion accounts were hacked
On Wednesday, in a security hearing that called both Equifax and Yahoo's past and present executives to Washington D.C., we're learning a bit more about what Yahoo didn't know about the biggest hack in history. When pressed about how Yahoo failed to recognize that 3 billion accounts — and not 500 million as first reported — were compromised in what was later revealed to be a state sponsored attack by Russia, former Yahoo CEO Marissa Mayer admitted that the specifics of the attack still remain unknown. "To this day we have not been able to identify the intrusion that led to this theft," Mayer told the Senate Commerce Committee. "We don't exactly understand how the act was perpetrated. That certainly led to some of the areas where we had gaps of information." Notably, while Mayer is no longer with the company, Verizon Chief Privacy Officer Karen Zacharia, also present on the panel, did not chime in to disagree with that assessment. Yahoo did not