It's simple to accidentally become entranced by an endless loop of videos on Instagram or TikTok. But sometimes, that mindless scroll is interrupted by a reminder that what you thought was a 10-minute break spent on your phone was closer to 30 minutes.

Olivia Yokubonis, armed with a kind voice and scientific research, often pops up in feeds on social platforms, gently reminding viewers that they might not remember the video they saw two videos before she appeared on the screen.

Social media companies have revoked access to about 4.7 million accounts identified as belonging to children in Australia since the country banned use of the platforms by those under 16, officials said.

"We stared down everybody who said it couldn't be done, some of the most powerful and rich companies in the world and their supporters," communications minister Anika Wells told reporters on Friday. "Now Australian parents can be confident that their kids can have their childhoods back."

Elon Musk's AI chatbot Grok won't be able to edit photos to portray real people in revealing clothing in places where that is illegal, according to a statement posted on X.

The announcement late Wednesday followed a global backlash over sexualized images of women and children, including bans and warnings by some governments.

Iranians have found themselves without email, texts and foreign apps for days, with even landline phone calls unreliable under a digital blackout imposed by authorities in the face of widespread protests.

UK media regulator Ofcom on Monday launched a formal investigation into Elon Musk's X over its AI chatbot Grok's image creation feature that has been used to produce sexualized deepfakes.

More artificial intelligence is being implanted into Gmail as Google tries to turn the world's most popular email service into a personal assistant that can improve writing, summarize far-flung information buried in inboxes and deliver daily to-do lists.

The new AI features announced Thursday could herald a pivotal moment for Gmail, a service that transformed email when it was introduced nearly 22 years ago. Since then, Gmail has amassed more than 3 billion users to become nearly as ubiquitous as Google's search engine.

Two NATO-nation intelligence services suspect Russia is developing a new anti-satellite weapon to target Elon Musk's Starlink constellation with destructive orbiting clouds of shrapnel, with the aim of reining in Western space superiority that has helped Ukraine on the battlefield.

Intelligence findings seen by The Associated Press say the so-called "zone-effect" weapon would seek to flood Starlink orbits with hundreds of thousands of high-density pellets, potentially disabling multiple satellites at once but also risking catastrophic collateral damage to other orbiting systems.

As the rest of the world rushes to harness the power of artificial intelligence, militant groups also are experimenting with the technology, even if they aren't sure exactly what to do with it.

For extremist organizations, AI could be a powerful tool for recruiting new members, churning out realistic deepfake images and refining their cyberattacks, national security experts and spy agencies have warned.

As Australia began enforcing a world-first social media ban for children under 16 years old this week, Denmark is planning to follow its lead and severely restrict social media access for young people.

The Danish government announced last month that it had secured an agreement by three governing coalition and two opposition parties in parliament to ban access to social media for anyone under the age of 15. Such a measure would be the most sweeping step yet by a European Union nation to limit use of social media among teens and children.

Australian Prime Minister Anthony Albanese welcomed a world-first social media ban for children younger than 16 that took effect Wednesday as families taking back power from tech giants but warned the implementation would be difficult.

Many children posted farewell messages, while parents reported distraught children discovering they'd been shut out of platforms as the landmark law took effect. Some young children reported fooling the platforms' age estimation technology by drawing on facial hair. Parents and older siblings are also expected to help some children circumvent the restrictions.