Americans paid about $325 million in cyber ransom in 2015, and that figure will rise dramatically this year.
The series of coordinated cyber attacks reportedly originated from Russia.
Defense Secretary Ash Carter says attacks designed to prevent Islamic State from commanding its forces.
U.S. cyber intelligence firm iSight Partners linked the incident to a Russian hacking group known as "Sandworm."
The group posted pictures of the Turkish flag and Mustafa Kemal Atatürk.
A congressional advisory body says retaliating would make hacks more costly to perpetrators.
The hacking compromised information in 83 million household and small business accounts.
A new report suggests that some facilities could be hacked using "nothing more than a flash drive."
Director of National Intelligence James Clapper said his approach will be to "trust but verify."
The Chinese president put on a good show with governors and tech execs in Seattle, but what did it all amount to?
Malicious iPhone and iPad programs identified.
We need to target potential terrorists with the techniques of our digital ad companies, who know you better than your mother does.
An interactive map by Norse, a threat intelligence firm, visualizes the global cyberwar in real time.
The hackers allegedly aimed to get personal-identity information.
U.S. officials suspect the cyber attack on the Office of Personnel Management, which collects information for federal employees, originated in China.
Experts warn that a cyber attack on the national grid or water infrastructure could have "catastrophic" effects.
WikiLeaks on Thursday released an online searchable database of more than 30,000 documents obtained by hackers in a massive cyber attack last year.
Hacker collective strikes dozens of Israeli websites but fails to hinder government's online presence.