Websites around the world have been taken offline as governments and businesses scramble to fix a flaw in the computer language PHP. There are fears that hackers could exploit the vulnerability to steal data, take control of web servers and disrupt services. Millions of attempts have already been made to attack websites since the issue with the programming language was revealed, cybersecurity companies have said. Michael Safi speaks to global technology reporter Aisha Down

Problem in language that underpins 70% of sites has led governments and companies to pull sites offline to patch fault

• Tell us: have you been affected by the PHP code flaw?

• What is PHP, and how bad is the computer language flaw causing website shutdowns globally?

Websites around the world have been hit by millions of attempts to exploit a recently discovered vulnerability in their code, cybersecurity companies have said, as the US warned the flaw could allow attackers to take control of web servers, steal data and disrupt services.

The problem in the PHP programming language, which underpins about 70% of the world’s websites, emerged on Wednesday causing governments and companies to pull their websites off the internet before they could be attacked and so they could patch the fault.

Precautionary takedowns come as experts say bad actors could exploit vulnerability in language used by 70% of sites

Websites around the globe have gone dark after a serious vulnerability was found in a computer language used to build much of the world wide web.

Belgian, Dutch, Finnish, French and German sites were among those that governments took down temporarily as they scrambled to patch the critical weakness in PHP, a language used by almost 70% of websites.

Development by UK firm Nscale heralded by ministers as largest of its kind in country loses anchor tenant

The development of a huge AI datacentre hailed by the UK government has received a fresh setback after Microsoft pulled out of the project over concerns about power supplies.

The development by the British company Nscale, heralded by ministers as the country’s largest AI datacentre when it was announced in 2025, was planned to open at Loughton in Essex next year.

Discover-Tech’s Controlium software lets clients mass-profile internet users then covertly hack targets, say researchers at University of Toronto

An Israeli advertising agency has been serving millions of online adverts that allow “zero-click” spyware to be used against targets, researchers at a Canadian university have said.

Citizen Lab, a digital investigations research unit at the University of Toronto, said it believed dozens of devices at the Qatari broadcaster Al Jazeera had been compromised by spyware delivered through ads run by Discover-Tech, which describes itself as a specialised digital advertising agency.

While some viral online graphs suggest less bot activity, Zelenskyy’s claims of improved social media discourse do not entirely pass muster

Over the weekend, Ukraine carried out at least three airstrikes on datacentres belonging to the Russian search engine company Yandex. Reports suggest at least two of these datacentres took significant damage, with Telegram footage appearing to show one on fire. Yandex acknowledged the strikes, and Russian media reported that several websites appeared affected by the downed datacentres.

On Monday, Volodymyr Zelenskyy suggested the strikes had dampened Russia’s massive disinformation operation, saying: “It suddenly became a little easier to breathe on many social platforms. There was less hate, less division and fewer provocations.”

Lithuania and Canada were also pressured to withdraw, and days before #Disinfo2026, logos were wiped off website

The Trump administration pressured multiple countries to withdraw their sponsorship of a leading European conference on disinformation, with Canada, Lithuania and the EU’s diplomatic service subsequently agreeing to do so, the Guardian understands.

The conference, #Disinfo2026, taking place on Wednesday and Thursday, is the annual meetup of Europe’s counter-disinformation community and has drawn hundreds of researchers, journalists, technologists and policymakers to a hotel in Vilnius, Lithuania. It is run by an independent Brussels non-profit, EU Disinfo Lab.

After a week of alarming warnings about artificial intelligence’s potential to destroy the world as we know it, our technology reporters Aisha Down, Blake Montgomery and Dan Milmo answer your questions on the reality of the AI threat

In realistic terms how would artificial intelligence actually kill me? What is the main proxy threat? Nuclear war, death due to breakdown of society, a virus? I hear all these reports it could kill us but still unsure how that could practically happen? To be honest all sounds too wooly to really take seriously. Pottys99

Aisha: For what it’s worth, it seems unlikely that AI at this point can significantly change the equation around bioweapons or viruses … What has prevented bioweapon attacks through the past decades is not the difficulty of inventing new deadly viruses, but other, more prosaic issues. Consider the failure of Aum Shinrikyo to kill vast numbers of people with botulism and anthrax by spraying these around central Tokyo. There are a lot of logistical challenges, and chemical weapons seem more straightforward. Those exist without AI needing to invent new ones.

Exclusive: Official UK security assessment found Microsoft cloud platform storing files was at potential risk from hostile hackers

Vast troves of highly sensitive police data are lying on Microsoft cloud platforms which an official UK security assessment deemed to be vulnerable to “compromise” by foreign actors and the US government, a Guardian investigation can reveal.

The files include criminal records, victim statements, internal emails and sensitive information held by more than 40 police forces across the UK.

Though Europe has measures that address how consumers might encounter AI, technology will impact them if the worst scenarios bear

Europe’s dilemma over AI was rendered in stark terms this week. The head of the continent’s central bank, Christine Lagarde, said Europeans have two options: shun the technology and lose out on growth; or embrace it and become dependent on tools developed by the US and China.

The great debate over AI safety that has erupted in recent days threatens to make the choice moot. If the worst scenarios come to bear – and experts have differing views on this – then the technology will impact the continent regardless.

After a week of alarming warnings about artificial intelligence’s potential to destroy the world as we know it, our technology reporters answered your questions on the reality of the AI threat

IcommentthereforeIam asks: Given our senses, emotions, memory and moods, is it ever going to be accepted that humanly conscious AI is fantasy?

Dan: This is a serious question that has even rattled Richard Dawkins, the evolutionary biologist. He may not believe that God is real but he does believe that AI is conscious - or at least the chatbot he was using, which he called Claudia. “You may not know you are conscious, but you bloody well are,” he wrote.

And he’s not the first. In 2022 Google fired an engineer who went public with his belief that a company-developed AI had feelings. At the more troubling end of this belief, there are countless examples of people becoming overly attached to, and influenced by, AI chatbots – including cases of psychosis.

Aisha: There’s certainly a theatrical – even “psy-op”- quality to the flurry of AI doomsaying over the past weeks. It’s hard to say entirely what concrete developments are at the root of it all. We know that the Hugging Face incident, where a “swarm” of AI agents hacked another company, has been one trigger of the drama. There have been other contributing incidents too – Dario Amodei suggests internal developments at Anthropic have prompted his latest round of blogging, and there’s been some X discourse and doomy muttering about bioweapons.

We aren’t in the heads of Dario Amodei or Sam Altman, and so we cannot say how sincere they are, and how much they might have other goals in mind – such as, perhaps, delaying their IPOs until their finances look better. But any company of their size, and with their potential liabilities, would be angling hard to be regulated as favourably as possible. That’s what big companies do.

Research shows tens of millions of people are being forced to use platform that amounts to ‘backdoor’ on their device

Over the past 18 months, tens of millions of Russians have been forced to install a new app on their phones – a violet-blue button designed for messaging and payments, called Max.

Authorities have touted it as a patriotic alternative to Telegram and WhatsApp; Russian glitterati have promoted it in rap videos and comic routines. This summer, it became the country’s most-used messaging app.

We examine claims and counterclaims about the risks and calls to slow down the pace of AI development

There have been some shocking claims in recent days about AI safety: we face a 10% chance of doom; AIs are worse than nukes; a “botnet” threatens the entire internet; it’s all a big tech psyop.

Below, we look at six claims and reactions to them.

Student protesters among those hacked, says digital rights group, though Aleksandar Vučić’s government denies spying

At least 14 people from across Serbian civil society were targeted with advanced spyware earlier this year in what the digital rights group Share Foundation said was the largest documented ​wave of such infection in Serbia to date.

The wave of spyware infections was discovered in August after Apple notified people in 110 ⁠countries that they had probably been victims ⁠of mercenary spyware.

Opposition mounts as at least 20 projects proposed, including one in Fife billed as second largest in world

Kat Jones may be the closest thing Scotland has to Erin Brockovich in 2026. Standing in the shadow of Arthur’s Seat outside Holyrood, the 52-year-old is revving up the crowd of protesters around her. “Who is here from Lammermuir? Ayrshire? What about Aberdeen?” she calls to the crowd.

On Thursday, hundreds travelled to Edinburgh to call for an immediate moratorium on Scotland’s datacentre boom, which includes one project in Auchtertool, Fife, that has been billed as the second largest in the world.

Relocation coincides with proposed laws that opponents say would entrench power of US tech billionaires in country

Dozens of protesters converged on Peter Thiel’s mansion in Buenos Aires this week after a congressional session raised questions about the billionaire’s presence in the country.

In white masks, they held signs saying “Peter Thief” and “No to the Peter Thiel law” in front of the wrought-iron gates of the $12m (£8.9m) residence, which Thiel bought in April as he moved his family to Argentina.

Other governments could seek similar concessions, while separate legal action is pending in places ranging from Kenya to the Netherlands

In October 2021, Abrham Meareg’s father, a professor of chemistry in Ethiopia’s northern town of Bahir Dar, was shot at close range and died outside his family home. This was in the middle of the country’s civil war.

For weeks, Facebook’s algorithm had actively promoted posts calling for the academic to be murdered, according to Meareg and Foxglove, a nonprofit organisation supporting Meareg’s lawsuit against the company in Kenya. These posts included photos of his father and his home address.

AI companies have promised us world-shifting technology. But there’s a cost: loud, unsightly datacentres that drain environmental resources. As the government pushes their rapid growth, can local communities do anything to push back? Madeleine Finlay speaks to the Guardian’s global technology reporter Aisha Down about the backlash to datacentres across the UK and around the world

AI companies have promised us world-shifting technology. But there’s a cost: loud, unsightly datacentres that drain environmental resources. As the government pushes their rapid growth, can local communities do anything to push back? Madeleine Finlay speaks to the Guardian’s global technology reporter Aisha Down about the backlash to datacentres across the UK and around the world

For tickets to the Science Weekly live event at the London podcast festival on the future of AI, visit the event page at kingsplace.co.uk

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Holyrood ‘inching towards moratorium’ amid concerns over massive proposed developments in Auchtertool and beyond

In a village 21 miles north of Edinburgh, a real estate consultancy plans to build a datacentre larger than the village itself – 35 metres high, with an area larger than 100 football pitches.

Billed as the second-biggest datacentre in the world, the development in Auchertool, Fife, has attracted 1,600 objections.