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How hackers held the NHS to ransom

NHS staff found their computer screens repleaced by a padlock and a demand for money. Eerily, a junior doctor warned about such an attack days earlier. 

On Friday, doctors at Whipps Cross Hospital, east London, logged into their computers, but a strange red screen popped up. Next to a giant padlock, a message said the files on the computer had been encrypted, and would be lost forever unless $300 was sent to a Bitcoin account – a virtual currency that cannot be traced. The price doubled if the money wasn’t sent within six days. Digital clocks were counting down the time.

It was soon revealed Barts Health Trust, which runs the hospital, had been hit by ransomware, a type of malicious software that hijacks computer systems until money is paid. It was one of 48 trusts in England and 13 in Scotland affected, as well as a handful of GP practices. News reports soon broke of companies in other countries hit. It affected 200,000 victims in 150 countries, according to Europol. This included the Russian Interior Ministry, Fedex, Nissan, Vodafone and Telefonica. It is thought to be the biggest outbreak of ransomware in history.

Trusts worked all through the weekend and are now back to business as usual. But the attack revealed how easy it is to bring a hospital to its knees. Patients are rightly questioning if their medical records are safe. Others fear hackers may strike again and attack other vital systems. Defence minister Michael Fallon was forced to confirm that the Trident nuclear submarines could not be hacked.

So how did this happen? The virus, called WannaCry or WannaDecrypt0r, was an old piece of ransomware that had gained a superpower. It had been combined with a tool called EternalBlue which was developed by US National Security Agency spies and dumped on the dark web by a criminal group called Shadow Brokers. Computers become infected with ransomware when somebody clicks on a dodgy link or downloads a booby-trapped PDF, but normally another person has to be fooled for it to harm a different computer. EternalBlue meant the virus could cascade between machines within a network. It could copy itself over and over, moving from one vulnerable computer to the next, spreading like the plague. Experts cannot trace who caused it, whether a criminal gang or just one person in their bedroom hitting "send".

Like a real virus, it had to be quarantined. Trusts had to shut down computers and scan them to make sure they were bug-free. Doctors – not used to writing anything but their signature – had to go back to pen and paper. But no computers meant they couldn’t access appointments, referral letters, blood tests results or X-rays. In some hospitals computer systems controlled the phones and doors. Many declared a major incident, flagging up that they needed help. In Barts Health NHS Trust, ambulances were directed away from three A&E departments and non-urgent operations were cancelled.

The tragedy is that trusts had been warned of such an attack. Dr Krishna Chinthapalli, a junior doctor in London, wrote an eerily premonitory piece in the British Medical Journal just two days earlier telling hospitals they were vulnerable to ransomware hits. Such attacks had increased fourfold between 2015 and 2016, he said, with the money being paid to the criminals increased to $1bn, according to the FBI. NHS trusts had been hit before. A third reported a ransomware attack last year, with Imperial College London NHS Trust hit 19 times. None admitted to paying the ransom.

Hospitals had even been warned of this exact virus. It exploited a vulnerability in Microsoft Windows operating systems – but Microsoft had been tipped off about it and raised the red flag in March. It issued a patch – an update which would fix it and stop systems being breached this way. But this patch only worked for its latest operating systems. Around 5 per cent of NHS devices are still running the ancient Windows XP, the equivalent of a three-wheeled car. Microsoft said it would no longer create updates for it two years ago, rendering it obsolete.

There are many reasons why systems weren’t updated. Labour and the Lib Dems were quick to blame the attack on lack of Tory funding for the NHS. It is clear cost was an issue. Speaking on BBC Radio 4’s PM programme on Saturday, ex-chief of NHS Digital Kingsley Manning estimated it would take £100m a year to update systems and protect trusts against cyber attacks. Even if that money was granted, there is no guarantee cash-strapped trusts would ringfence it for IT; they may use it to plug holes elsewhere.

Yet even with the money to do so updating systems and applying patches in hospitals is genuinely tricky. There is no NHS-wide computer system – each trust has its own mix of software, evolved due to historical quirk. New software or machines may be coded with specific instructions to help them run. Changing the operating system could stop them working – affecting patient care. While other organisations might have time to do updates, hospital systems have to be up and running 24 hours a day, seven days a week. In small hospitals, it’s a man in a van manually updating each computer.

Some experts believe these are just excuses; that good digital hygiene kept most trusts in the UK safe. "You fix vulnerabilities in computers like you wash your hands after going to the toilet," said Professor Ross Anderson, a security engineering expert at Cambridge University. "If you don't, and patients die, excuses don't work and blame shifting must not be tolerated."

It is not known yet if any patients have died as a result of the attack, but it certainly raised fears about the safety of sensitive medical records. This particular virus got into computer files and encrypted them – turning them into gooble-de-gook and locking doctors out. Systems were breached but there have been no reports of records being extracted. Yet the scale of this attack raises fears in future the NHS could be targeted for the confidential data it holds. "If it’s vulnerable to ransomware in this way, it could be vulnerable to other attacks," said Professor Alan Woodward security expert at the University of Surrey's department of computing.

In the US, there have been examples where ransomware attacks have led to patient data being sucked out, he said. The motivation is not to embarrass people with piles or "out" women who have had an abortion, but because medical information is lucrative. It can be sold to criminals for at least $10, a price 10 times higher than can be earned by selling credit card details. Dossiers with personal identification information – known as "fullz" on the dark web – help crooks commit fraud and carry out scams. The more personal details a conman knows about you the more likely you are to fall for their hustle.

Hospital data is backed up at least hourly and three copies are kept, one offsite, so it is unlikely any medical records or significant amounts of data will have been lost – although the hack will cost the NHS millions in disruption. A British analyst, who tweets under the name Malware Tech, became an unlikely hero after accidentally finding a killswitch to stop the virus replicating. He registered a website, whose presence signalled to the virus it should stop. Yet he admits that a simple tweak of the code would create a new worm able to infect computers.

Experts warn this event could trigger a spate of copycat attacks. Hacker may turn their eyes to other public services. Dr Brian Gladman, a retired Ministry of Defence director, and ex-director of security at Nato, points out that our entire infrastructure, from the national grid, food distribution channels to the railways rely on computer systems. We now face an arms race – and criminals only have to get lucky once.

"We’re going to get more attacks and more attacks and it’s going to go on," he said. "We’ve got to pay more attention to this."

Madlen Davies is a health and science reporter at The Bureau of Investigative Journalism. She tweets @madlendavies.

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Meet Anne Marie Waters - the Ukip politician too extreme for Nigel Farage

In January 2016, Waters launched Pegida UK with former EDL frontman Steven Yaxley-Lennon (aka Tommy Robinson). 

There are few people in British political life who can be attacked from the left by Nigel Farage. Yet that is where Anne Marie Waters has found herself. And by the end of September she could well be the new leader of Ukip, a party almost synonymous with its beer-swilling, chain-smoking former leader.

Waters’s political journey is a curious one. She started out on the political left, but like Oswald Mosley before her, has since veered dramatically to the right. That, however, is where the similarities end. Waters is Irish, agnostic, a lesbian and a self-proclaimed feminist.

But it is her politics – rather than who she is – that have caused a stir among Ukip’s old guard. Former leader Paul Nuttall has said that her views make him “uncomfortable” while Farage has claimed Ukip is “finished” if, under her leadership, it becomes an anti-Islam party.

In her rhetoric, Waters echoes groups such as the English Defence League (EDL) and Britain First. She has called Islam “evil” and her leadership manifesto claims that the religion has turned Britain into a “fearful and censorious society”. Waters wants the banning of the burqa, the closure of all sharia councils and a temporary freeze on all immigration.

She started life in Dublin before moving to Germany in her teens to work as an au pair. Waters also lived in the Netherlands before returning to Britain to study journalism at Nottingham Trent University, graduating in 2003. She subsequently gained a second degree in law. It was then, she says, that she first learnt about Islam, which she claims treats women “like absolute dirt”. Now 39, Waters is a full-time campaigner who lives in Essex with her two dogs and her partner who is an accountant.

Waters’s first spell of serious activism was with the campaign group One Law for All, a secularist organisation fronted by the Iranian feminist and human rights activist Maryam Namazie. Waters resigned in November 2013 after four years with the organisation. According to Namazie, Waters left due to political disagreements over whether the group should collaborate with members of far-right groups.

In April 2014, Waters founded Sharia Watch UK and, in January 2016, she launched Pegida UK with former EDL frontman Steven Yaxley-Lennon (aka Tommy Robinson). The group was established as a British chapter of the German-based organisation and was set up to counter what it called the “Islamisation of our countries”. By the summer of 2016, it had petered out.

Waters twice stood unsuccessfully to become a Labour parliamentary candidate. Today, she says she could not back Labour due to its “betrayal of women” and “betrayal of the country” over Islam. After joining Ukip in 2014, she first ran for political office in the Lambeth council election, where she finished in ninth place. At the 2015 general election, Waters stood as the party’s candidate in Lewisham East, finishing third with 9.1 per cent of the vote. She was chosen to stand again in the 2016 London Assembly elections but was deselected after her role in Pegida UK became public. Waters was also prevented from standing in Lewisham East at the 2017 general election after Ukip’s then-leader Nuttall publicly intervened.

The current favourite of the 11 candidates standing to succeed Nuttall is deputy leader Peter Whittle, with Waters in second. Some had hoped the party’s top brass would ban her from standing but last week its national executive approved her campaign.

Due to an expected low turnout, the leadership contest is unpredictable. Last November, Nuttall was elected with just 9,622 votes. More than 1,000 new members reportedly joined Ukip in a two-week period earlier this year, prompting fears of far-right entryism.

Mike Hookem MEP has resigned as Ukip’s deputy whip over Waters’ candidacy, saying he would not “turn a blind eye” to extremism. By contrast, chief whip, MEP Stuart Agnew, is a supporter and has likened her to Joan of Arc. Waters is also working closely on her campaign with Jack Buckby, a former BNP activist and one of the few candidates to run against Labour in the by-election for Jo Cox’s former seat of Batley and Spen. Robinson is another backer.

Peculiarly for someone running to be the leader of a party, Waters does not appear to relish public attention. “I’m not a limelight person,” she recently told the Times. “I don’t like being phoned all the time.”

The journalist Jamie Bartlett, who was invited to the initial launch of Pegida UK in Luton in 2015, said of Waters: “She failed to remember the date of the demo. Her head lolled, her words were slurred, and she appeared to almost fall asleep while Tommy [Robinson] was speaking. After 10 minutes it all ground to an uneasy halt.”

In an age when authenticity is everything, it would be a mistake to underestimate yet another unconventional politician. But perhaps British Muslims shouldn’t panic about Anne Marie Waters just yet.

James Bloodworth is editor of Left Foot Forward

This article first appeared in the 17 August 2017 issue of the New Statesman, Trump goes nuclear