How did a little-known Chinese start-up cause the markets and U.S. tech giants to quake? Here’s what to know.

Border enforcement agencies have spent billions assembling surveillance tools to track and find people. These could be critical in President Trump’s immigration agenda.

The federal law banning TikTok has revealed a major schism among American tech companies: Some are willing to flout the law — and some,...

The creators of a new test called “Humanity’s Last Exam” argue we may soon lose the ability to create tests hard enough for A.I....

OpenAI, Oracle and SoftBank formed a new joint venture called Stargate to invest in data centers, building on major U.S. investments in the technology.

Some users saw the social media app come back online on Sunday, following a shutdown when a federal law went into effect requiring a...

While TikTok remains hugely popular in Brazil, Indonesia and other markets, its 170 million users in the United States are its most valuable.

The move is under discussion as the Chinese-owned app faces a Sunday deadline to find a new buyer or shut down in the United...

Regulators filed a lawsuit in federal court stemming from Mr. Musk’s $44 billion purchase of the social media company now called X.