The Treasury Department has announced sanctions in connection with a massive Chinese hack of American telecommunications companies and a breach of its own computer network

Users told that American requests for images of sensitive areas should be ignored over national security concerns.

China signaled Tuesday that it would engage with new US Secretary of State Marco Rubio, who was sanctioned by Beijing in 2020.

Taiwan has seen a “significant rise” in the number of individuals charged with suspicion of spying on behalf of China in recent years, according to new data released by the island’s security bureau, amid escalating intimidation by Beijing.

China said Thursday that an investigation had found the European Union imposed unfair "trade and investment barriers" on Beijing ... security threat. When announcing the probe, the ministry ...

The sanctions target a Chinese hacker who officials say is affiliated with Beijing's Ministry of State Security and was involved in a cyberintrusion disclosed last month that gave hackers access to an untold number of Treasury Department workstations.

Aggressors in these types of attacks have the advantage over the defenders, and China cannot be talked out of spying. But that does not mean these attacks should just be endured. The new Trump administration can better stymie its adversaries by modernizing technology,

President Trump's first national security priorities are to restore the Pentagon's warfighting readiness and reform the intelligence community.

By David Brunnstrom, Simon Lewis and Alasdair Pal WASHINGTON (Reuters) -The United States, Australia, India and Japan recommitted to working together on Tuesday, after the first meeting of the China-focused "Quad" grouping's top diplomats since President Donald Trump returned to the White House.

Donald Trump argues that the US needs Greenland for national security, while a retaking of the Panama Canal is necessary to curb the overcharging of American ships and combat Chinese influence.

For many of America’s 170 million TikTok users, US President Donald Trump’s move to delay a legal ban of the popular social media platform was cause

First meeting of Trump presidency for security group focused on Indo-Pacific voices opposition to altering status quo 'by force or coercion' Just hours after being sworn in as US secretary of state on Tuesday,