Facebook said it was "back at 100 percent" Wednesday evening after an outage on all of its services affected users in various parts of the world.

Twitter said Thursday it would label and "deprioritize" tweets from officials and politicians that violate its rules -- a move potentially affecting the prodigious output of U.S. President Donald Trump. 

The EU's powerful anti-trust authority on Thursday cleared the buyout by IBM of open source software company Red Hat, one of the biggest tech mergers in history which the computing giant said would enhance its cloud offerings.

Huawei employees have teamed up with Chinese military scientists to carry out research, a collaboration that challenges the telecom giant's assertion that it has no ties to the country's government or armed forces.

Facebook boss Mark Zuckerberg said Wednesday that a lack of action by US authorities on fake political content on the platform after the 2016 US election helped pave the way for a subsequent avalanche of online disinformation.

The CEO -- who has himself been widely criticised for a lackluster response to fake news -- also called on governments to further regulate private data, political advertising and step up efforts to prevent state actors from interfering in US elections.

Heading in to the G20 summit, Facebook is on notice from powerful regulators including the Fed chief that its ambitious plans for a global crypto-currency face piercing scrutiny.

A French consumer rights group said Wednesday that it has launched a class action lawsuit against U.S. tech giant Google for violating the EU's strict data privacy laws.

Chinese telecommunications giant Huawei said Wednesday that its 5G business has not been impacted by the recent US sanctions amid a prolonged trade war between the world's two largest economies.

Bitcoin surged to a near 16-month high above $11,000 Monday, overshadowing showings across stock, foreign exchange and commodity markets, with investors looking ahead to the week's G20 summit.

The US Commerce Department blacklisted five Chinese tech entities Friday in a new move against Beijing's supercomputing industry likely to raise tensions ahead of a meeting between President Trump and Xi Jinping next week.