Twitter’s thin blue line: a velvet rope to connect the riff-raff to the elite

The latest update to the social network is simply a helpful little line to make it easier to follow a conversational thread. In reality, it will mean that the clubby little chats of the great and good will be even more difficult to avoid.

How Barack Obama got elected I’ll never know. With rhetoric centred around the repeated use of the word ‘change’ he somehow appealed to the Social Media generation. And if we know one thing about them it’s this; they don’t like change.

You only have to wander into Facebook after one of its thrice-monthly makeovers to know that’s true. The kind of wailing and rending of garments you’ll see after a minor alteration of the network’s news feed hasn’t been witnessed since Moses nearly missed his print deadline for The Book Of Job.

Now — setting aside for a moment the possibility that Syrian hackers have compromised the network in a peculiarly constructive way — Twitter has a social upheaval of its own.

The principal difference between the two leading social networks is that while Facebook is unapologetically a platform for closed friendship groups, Twitter aspires to be The National Conversation.

The latest update to the Twitter web client introduces a helpful little line to make it easier to follow a conversational thread. Hardly groundbreaking stuff.

The thinking behind the (by default) blue line is to promote conversation. To encourage people to butt in to the conversations they see going on around them. To promote tweets that are engendering conversations over random shouts in the darkness. .  In essence, Twitter wants some of Facebook’s action.

But of course the blue line is also a velvet rope. There’s an élite on Twitter as there is everywhere else. And, as they do everywhere else, they all know each other.

Unless you regularly consult Wikipedia you can often forget that an awful lot of politicians, actors and broadsheet columnists — no matter how egalitarian their standpoint, are either descended from someone famous, married to someone famous, or used to fag for someone famous at Eton.

On Twitter, it’s all too obvious that the cool kids all know each other. The national conversation is shot through with a skein of the great and the good chatting about meeting up later at one anothers’ book launches, or commiserating with one another about the hangovers they’re suffering after last night’s première.

Those conversations could be taking place via email, or in direct messages, rather than constituting a virtual Mean Girls lunch table to which the rest of us aren’t invited. But let’s be charitable. Maybe all those cool kids are just too hungover to send emails. There are an awful lot of book launches every week.

Twitter happily tells us that  “great conversations happen on Twitter every day” and that “they’re now easier to find and enjoy.” What they have become, in fact, is harder to avoid. The great school cafeteria of Twitter has been arranged to that we’re all in earshot of the cool kids table, all the time.

There is scope, and I’m sure I’m not the first person to notice this, to exploit Twitter’s new conversation lines. For commercial interests to link tweets to give them more conversational ‘weight’ and float them to the top of more timelines.

So, in summation. Ordinary people don’t like the blue lines because they don’t like change of any kind. The cool kids won’t notice the blue lines because they’ve always used Twitter as a conversational medium anyway. And unless Twitter are getting a kickback from the commercial operators that will swoop in to exploit the new opportunity, they won’t derive much benefit from it.

If we were rational about social networking, the blue line would soon become so ubiquitous as to become effectively invisible.

As we’re not, I doubt if it’ll last until the end of the Obama administration.

A still from Twitter's video introducing the update to its web client.

Michael Moran is the television columnist for the Lady magazine and the creator of the literary spoof “100 Books I'll Never Write".

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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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