Karim Baratov pleaded guilty in November for playing a role in the massive 2014 Yahoo data breach.

Baratov is charged with building a for-profit hacking empire whose customers included Russian intelligence.

The SEC said Yahoo didn't properly investigate or consider whether to inform investors of its 2014 breach, which didn't become public until two years later.

The plaintiffs say they would have chosen a different email provider had they been aware of Yahoo's risks.

The Democratic National Committee has hired former Yahoo CISO Bob Lord to lead the committee's cybersecurity operations.

Craig Silliman, Verizon’s EVP of Public Policy and General Counsel, said Verizon didn't panic when Yahoo announced a very bad breach in late 2016.