“We can’t see…other nations attacking us,” the retired general and first head of U.S. Cyber Command said at a House Armed Services Committee hearing Wednesday.

A global cybersecurity drill hosted by DHS that began Tuesday should “push participants out of their comfort zone," top DHS cybersecurity official Jeanette Manfra said.

Ashton Carter, who was President Barack Obama's secretary of Defense, seemed to suggest that the complex relationship between national security agencies and the private sector has turned a corner in recent years.

The World Economic Forum announced plans to launch a new coordinating group to counter emerging cybersecurity threats and help connect leaders from business and government to collaborate on various security issues.

Equipping and staffing a large corporation to join DHS's automated cyberthreat-indicator sharing program can be a six- or seven-figure cost.

Cyberthreat information sharing among private sector companies and with the federal government suffers from a tragedy of the commons, lawmakers were told Wednesday — everyone wants to receive, but few are prepared to make the effort to give back.