The release is the first time the government has called out malware thought to be Chinese in origin.

The announcement comes after researchers suggested the attackers likely would have accessed some private correspondence.

The lawmakers want the classified briefing to take place before Congress adjourns for its August recess.

The FBI is investigating the incident.

A former Obama administration official says creating an National Cyber Director won't smake the federal government a well-oiled cybersecurity machine, but it will put a crucial piece in place.

Researchers say it's the first-ever Russian crime ring of this kind. Nigerian roots are more common.