Yahoo says hackers stole data from 500 million accounts in 2014
“Yahoo Inc (YHOO.O) said on Thursday that at least 500 million of its accounts were hacked in 2014 by what it believed was a state-sponsored actor, a theft that appeared to be the world’s biggest known cyber breach by far.”
Source: Yahoo says hackers stole data from 500 million accounts in 2014 | Reuters