On March 23, 2015 the Department of Defense gave a press briefing by Adm. Haney, the commander of US Strategic Command at the Pentagon.
His comments at the briefing touched upon the nuclear challenges our country faces, particularly from Russia and China. Within that same category of threat Adm. Haney also mentioned cyber space as something we should be worried about as a nation:
RUSSIA
“You all know Russia is modernizing both their nuclear triad and associated industrial base, and President Putin continues his provocative actions, such as demonstrating nuclear capabilities during the Ukraine crisis, penetrating U.S. and allied air defense identification zones with long-range strategic aircraft flights and violating the INF treaty”, Haney said.
CHINA
“Russia is not alone. China has developed a capable submarine and intercontinental ballistic missile force, and has recently demonstrated their counter space capabilities…”
NORTH KOREA
Adm. Haney: “North Korea claims to have possession of a miniaturized warhead and frequently parades their KN-O8 nuclear-capable ballistic missile”
IRAN
Commenting on Iran, the commander said this:
“And Iran recently launched a space vehicle that could be used as a long-range strike platform.”
CYBER SPACE
“While strategic deterrence today is underpinned and reinforced by our nuclear capabilities, it is more than nuclear. It also includes space, a contested, congested and competitive environment, and cyber space, where intrusions around the globe are also increasing at an unprecedented and alarming rate”, he warned.
Source: Pentagon
See related video: United States Strategic Command (USSTRATCOM) https://www.youtube.com/watch?v=kwXCh148a2A