Kaspersky Lab released research on a group hackers with ties to Russia. The findings come as FBI agents continue to dissuade private U.S. companies from purchasing and relying on Kaspersky.

The leading suspect behind the incident is a group associated with past operations tied to Russia. Yet there is a division among experts if that activity can be tied to the Kremlin.

A Twitter account tied to a group that a U.S. intelligence agency recently described as "Russian hackers ... supporting Russia's military operations" returned to the spotlight by posting a message that alleges multiple Ukrainian government officials are "sponsored" by Hillary Clinton.

A mysterious group appears to be relying on hacking tools that were originally stolen from Italian surveillance company Hacking Team to spy on European government officials, think tanks and journalists, according to new research published Thursday by cybersecurity firm F-Secure.

The Homeland Security Department quietly released a second technical report about Russian hacking, Friday, adding significant detail to a prior, December 29 release, which private sector security experts had criticized for lacking actionable information.