US executives say limiting the 'distillation' process from open-source models, in which one AI system learns from another, may be difficult to stop

Microsoft's security researchers observed that "individuals they believed to be connected to DeepSeek" were involved in an unauthorized data transfer several months ago

Meta has reportedly established four "war rooms" with engineers to assess the AI model developed by Chinese startup DeepSeek, insiders have alleged

Satellite photos show China appears to be building a large laser-ignited fusion research centre in a southwestern city

American billionaires and tech giants are falling over each other to get their bids in for TikTok

Little-known China startup allegedly spent $5.5 million, and used sub-optimal Nvidia chips, on an AI model that rates with the best created by US tech giants; this caused Nvidia and other tech shares to sink

WTO director-general Ngozi Okonjo-Iweala warned that tariffs of 25% or 60% could trigger tit-for-tat reprisals that return the world to the economic crisis of the 1930s

Tech giant, which owns TikTok, but may soon be permitted its sell its US arm, will spend half of that amount abroad on AI-related infrastructure, such as data centres and networking equipment, sources say

Trump noted on his first day in office the de minimis law, which allows over a billion products to be mailed to the US every year, is unlikely to survive for long

Trump announced the deal with OpenAI's Sam Altman, SoftBank CEO Masayoshi Son and Oracle founder Larry Ellison, saying it is the "largest AI infrastructure project in history"

Trump has ordered US agencies to review US trade deficits, unfair trade practices and currency manipulation; fentanyl is also a hot topic.

Before we head into Donald Trump’s first full day in office on Tuesday, here’s a look at what his first day back as president meant for technology, climate and markets