Social media platform Facebook has closed 68 pages and 43 accounts linked to a marketing group believed to be promoting the chances of Brazilian right-wing presidential candidate Jair Bolsonaro.

Google on Tuesday appealed the biggest ever anti-trust fine by the EU, which imposed a 4.34 billion euro ($5 billion) penalty on the U.S. tech giant for illegally abusing the dominance of its operating system for mobile devices.

Google on Tuesday launched a new version of its connected speaker with a touchscreen display designed to be a hub for smart home devices but without a camera for privacy reasons.

Google on Monday announced it is shutting down the consumer version of its online social network after fixing a bug exposing private data in as many as 500,000 accounts.

The U.S. internet giant said it will "sunset" Google+ social network for consumers, which failed to gain meaningful traction as a challenge to Facebook.

Facebook on Tuesday said hackers who stole digital keys to tens of millions of accounts appear not to have tampered with third-party applications linked to the social network.

Facebook engineers analyzed logs of outside applications and found no sign of trouble, according to product management vice president Guy Rosen.

Facebook on Tuesday stepped up ways to battle bullying and harassment at the leading social network.

The initiative calls for new tools and programs to help users control "unwanted, offensive or hurtful experiences on Facebook," global head of safety Antigone Davis said in a blog post.

The EU's top data privacy enforcer expressed worry Tuesday that Facebook had lost control of data security after a vast privacy breach that she said affected five million Europeans.

Three scientists on Tuesday won the Nobel Physics Prize, including the first woman in 55 years, for inventing optical lasers that have paved the way for advanced precision instruments used in corrective eye surgery, the jury said.

Tesla has promised to revolutionize the automobile, but the high-end electric car maker keeps hitting road blocks created by its founder Elon Musk's erratic behavior and considerable ego.

Facebook is at the centre of controversy yet again after admitting that up to 50 million accounts were breached by hackers.