Marissa Mayer Testifies on the Challenges of Halting State-Backed Persistent Attacks
Mayer told the committee that Yahoo fell victim to the breaches despite devoting substantial resources to security in an attempt to stay ahead of sophisticated and constantly evolving threats.
The former CEO of Yahoo, which had 3 billion records exposed in a 2013 data breach and another 500,000 in a separate 2014 breach, testified at a Senate hearing that it's tough for any corporation to defend against cyberattacks backed by nation-states. "Even robust defenses and prosecutors aren't sufficient to protect against the state-sponsored attack, especially when they're extremely sophisticated and persistent," Marissa Mayer testified. Last month, Yahoo reported its entire user base of 3 billion accounts was compromised in an August 2013 data breach. While the breach had been previously disclosed, the count of victims is triple Yahoo's December 2016 estimate that 1 billion accounts were compromised.