Illia Vitiuk is a top Ukrainian intelligence official. For him, the war with Russia is primarily in cyberspace — and in a rare exclusive interview with NPR, he says its far from over.

Ukrainian officials say Russian hackers remain focused on infiltrating military planning operations. That includes seizing and trying to crack tablets used on the on the front lines by officers.

The massive pipeline, which supplies 45% of the East Coast's gasoline and jet fuel, was forced to shut down over the weekend. The company says it has one line operating under manual control.

Russian hackers exploited gaps in U.S. defenses and spent months in government and corporate networks in one of the most effective cyber-espionage campaigns of all time. This is how they did it.

The National Security Agency, as well as its counterparts in Britain and Canada, say they're seeing persistent attempts to hack into organizations working on a potential vaccine.