British computer scientist denies he is bitcoin developer Satoshi Nakamoto

New York Times report claims London-born Adam Back is creator of the cryptocurrency after comparing writings

Greece announces social media ban for under-15s, citing anxiety and sleep problems

PM says ban will come into force in January if it is backed by parliament and calls for united action across EU

Alarm in health service over Palantir staff being given NHS email accounts

Exclusive: Sources believe AI tech company’s engineers have been granted access to directory of up to 1.5m staff

The best carry-on luggage in the UK, tested on an assault course

Our seasoned traveller braved obstacles and mud to put the best cabin bags to the test – from hard-shell to budget, wheeled to lightweight

Scientists develop AI tool to spot heart failure risk five years before it strikes

Oxford team’s technology picked up danger signs with 86% accuracy in study of 72,000 patients in England

It’s finally happened: I’m now worried about AI. And consulting ChatGPT did nothing to allay my fears

A highly alarming New Yorker feature on the machinations of Sam Altman drove me to test his AI for myself. The results were, well, highly alarming, says Guardian columnist Emma Brockes

New Ofcom boss Ian Cheshire’s in-tray is full but one issue will dominate

Implementation of the Online Safety Act has just got going, leaving ex-chair of Channel 4 with a huge task on his hands

‘This is my world’: Cornish director Mark Jenkin brings new film to home town

Exclusive: Time travel movie Rose of Nevada heralded as significant moment for Cornish film-making as it gets first UK screening in Newlyn

Britons warned about Russian hackers targeting internet routers for espionage

Expert stresses importance of staying alert for unusual activity, as hackers could ‘take you to fake sites’

Charli xcx’s Brat movie marks the moment the mockumentary died

Spoof documentaries once skewered subjects by dialling comic ingenuity up to 11, but the genre has stagnated – replaced by showbiz puff pieces and right-wing provocations. Has their time passed?

‘Coming out in the 90s? You might as well say ‘I love cock!’’ Nathan Lane on gay life, Broadway and defying stereotypes

The brassy actor’s performance in Death of a Salesman is the crown jewel in a life spent on stage. He says it could be his last Broadway role

Stand By Me review – Rob Reiner’s nostalgic look at friendship and the loss of innocence still grips tight

The 40th anniversary re-release of the film about four boys on a quest to see a dead body is a masterclass in directing, storytelling and acting

The Cure review – eat-the-rich horror fable with a sinister life-extension twist

A fabulously wealthy teen girl with lupus makes a new friend who pulls her out of plush isolation and toward some dark discoveries

US warns of Iran-affiliated cyber-attacks on critical infrastructure across country

Security agencies say municipalities should watch out for unusual activity, especially in water and energy sectors

Anna Wintour shares Vogue cover with Hollywood doppelganger Meryl Streep

Vogue’s global editorial director says Streep’s character in The Devil Wears Prada ‘distant’ from the real her