this is bbc news. i'm ben brown. the headlines at one. at london marylebone, the government insists theresa may a new air filtering system is trying had to reach out to labour in a bid to tackle the problem. to find a way forward on brexit, despite angering some conservatives. well, i wouldn't usually be standing this close to a fan blowing air working withjeremy corbyn is not something i want to do at all. in my face, but apparently this is giving me the cleanest air it is not something the prime minister wants to do. in the station. but far worse than that, would be behind this advertising board is a contraption containing a nano to fail to deliver on brexit. carbon filter capable of removing labour defends its handling over 90% of harmful gases of complaints about anti—semitism, after it was reported the party from the environment. failed to take disciplinary action in hundreds of cases. the devices are deliberately we have to tackle it but it will be positioned alongside the shops much easier to tackle it if we don't and waiting areas where most passengers spend their time. make it a personal attack onjeremy corbyn or a conservative this map shows how the quality attack on labour. of the air is improved significantly where the filters are. the polluted air is being sucked charlie rowley, one of the people in through the top of the unit poisoned in last year's suspected and sent to a chamber russian chemical attack in sailsbury, meets russia's in which there is a high—voltage electrical field where the ultrafine particles are being captured. the second stage is then a gas filter where we take out

the nitrogen dioxide, we take out eventual ozone that is produced in the first chamber, and then the last chamber is basically to direct the airflow out to get the clean air in the right place. but it's notjust london. last year, a0 cities across the uk either reached or exceeded the safe limit for air quality. and some have their own plans to better the air. in southampton, this bus is claiming to clean the air as it drives. the filter on the roof removes the ultrafine particles from the air that diesel engines on vehicles like these are spewing out. basically there are two large filter papers, filter slabs in the unit. there are three fans that suck air in. the bus doesn't go fast enough to get enough air in so we need

three fans that are driven by electricity. they suck air in. the air passes through the filter on the roof of the bus and it comes out much cleaner when it comes out the other end. and the hope is it could do a lot more than clean up its own act. if the city's 5,000 buses had these filters they could, in theory, clean the entire city's air twice over. up to a height of ten metres, at least. i suspect that there are quite a lot cities that might be interested in looking at this sort of technology and if it's not a bus it could be a refuse vehicle, it could be a delivery lorry, it could be on all sorts of things. now, we don't need to just keep things running with low emissions. keeping things running at all can be a challenge. imagine the chaos if these traffic lights went down. now imagine if the whole system went down due to a cyber—attack. but it's notjust about

transport networks. it's also large factories or power stations which have already fallen victim to these types of attacks. and dan simmons has been shown some research which suggests our infrastructure might be a lot more vulnerable than we previously thought. the ukrainian example was presumably done by a nationstate actor and there they were able to successfully, you know, turn off the lights in a neighbourhood. and that, to my mind, shows just how severe the consequences are. eitan goldstein has been helping secure the energy and utility sectors for almost ten years. you may want to disrupt oil and gas markets, right. the saudi example was the more recent of the two. and that was one where, presumably, a nationstate actor was specifically targeting safety systems in oil and gas refineries. and so there the assumption, the implication was that they were actually trying to cause physical harm and that one was really scary

because they were directly going after the safety systems. so where does it all begin for the countries or criminals behind such attacks? today, eitan‘s offered to show me a tool called shodan. shodan specifically tells me what devices are open facing to the internet, all right. and so what that tells me is there's part of my attack service, my cyber exposure out there that probably shouldn't be there and particularly its industrial control systems. if its industrial control systems. it helps me then prioritise where i'm exposed and what i need to do to start to reduce risk. we're searching for these. individual bits of kit that control the big industrial systems. they‘ re called programmable logic controllers, or prcs, and if you're running a water plant, power station, or factory, for example, you don't want to just anyone fiddling with them. we know that there's now 6,000 of these plcs connected to the internet. and this is a real time... this is real time. and they should never be connected to the open internet like that.

so there's over 5000 mistakes being made at the moment? there's many more than that. this is just the tip of the iceberg. these are just the ones that we can find now. yeah. and, look, this is a list of the countries where they're located. yeah. and so the power of the tool is the ability to click down. so, look, there's nearly 1000 of these in germany. right. so let's pull that up here. and what this will start to do here is give us some more information on the specific devices, the companies, where exactly they are. and, as you can see here, just to give you a sense, you've got a wide range of, you know, leading german companies, smaller manufacturing firms. what we're finding here is that industrial control systems are vulnerable everywhere. it's a risk for everyone. it's part of your cyber exposure for everyone. now, many of the control systems and infrastructure are old and don't get a software update that often. which is one reason to keep them off—line. but increasingly we're connecting more devices to the workplace, so the opportunities for an attack go up. this week an independent report conducted by a specialist research agency suggests a far worse picture

than previously thought. nine out of ten of the 700 security professionals working in critical infrastructure that took part in the survey commissioned by tenable said their workplace had suffered damage as a result of at least one successful cyber—attack in the last two years. but does it mean systems also went down? if you look at healthcare, oil and gas, utilities, transportation. roughly half of them in the last two years have experienced some sort of attack or a breach around their industrial control systems that has led to a shutdown. now, i think it's fair to say that you have to take this report with a pinch of reality, because the experts that responded did so possibly because they had something to say. so you might expect the figures to be a little bit higher than, perhaps, what is truly the case. but even allowing for an adjustment for that, this report paints a very different picture to the everything's 0k scenario that the public might be

persuaded to believe. under—reporting of cyber attacks against critical infrastructure is commonplace and it's notjust to protect reputations. it's in order to keep the confidence of us, the public, in the services provided to us, all around us, every day. the anonymity provided to the workers who responded to this, not the ceos or the bosses, might also have loosened some tongues. back at the board and we've narrowed our search to one particular programmable logic controller that's known to have security problems. what i've been able to do is find this device with a known vulnerability found by tenable. surely nobody would leave these connected to the internet? you've even got a gps. you can find it on the map. so what i'm able to do now, and again remotely, is click into that device and i can remotely change the password. it's notjust this one company.

shodan delivers up dozens of potential targets for us, including a major telecoms provider in the uk, germany, and in this scan, romania. shodan and tenable help companies find where their vulnerabilities are. but are organisations doing enough to protect us and could this happen again? the absent electricity — some very core functioning goes down. you don't want to need medical care, should that happen, for example. and so the consequences can indeed be quite severe. as to the motivations of the attackers, i don't know, but certainly nothing good, right. it's a way to almost disable a modern functional society. what do you believe is the probability of an attack on that scale in the united kingdom? on that scale, quite low. i think it's important not to fear—monger like that, right.

you know, the risk is real, the vulnerabilities are real, the cyber exposure is growing. there is that gap that you and i talked about earlier, but that doesn't mean the lights are going out in london next week. and i think we should be really sober about the risk. you don't need to exaggerate it in order to address it. and if they do go out, if this programme goes out after such an attack... and i was wrong? i trust you'll edit thoroughly. laughter. that was dan and that's it for the short version of the show. you can keep up with us on facebook, instagram and twitter at @bbcclick.

hello, we're up against it with the cloud across the uk today. there's been a lot of it about, certainly through the morning. i'm hoping things will brighten for many through the afternoon, but the east coast, which started with very closed in skies and some dense patches of fog, will always struggle. we may see that visibility improving but we keep an easterly breeze which will keep things pretty chilly and also cloudy. further west, though, the promise of some brighter skies, also some brightness across some parts of eastern england. what that may then do is allow temperatures to shoot up enough to turn some showers that will feed in from the east into some pretty punchy, thundery downpours through the middle part of the afternoon. that could be potentially very tricky for the boat races because lightning is the only thing that could keep the boats off the water. there will be showers around certainly in the london area through the afternoon. but the temperatures, though, where we get the sunshine up to 17 degrees, possible.

more cloud for scotland which caps the figures at around 11 or 12 at best. through the evening, heavier showers briefly for the midlands and north wales before they weaken. it looks like they will get pepped up again as they arrive into northern ireland by the end of the night. much clearer skies by the end of the night across scotland. a slightly chillier start to monday, but thankfully, finally, a much brighter start, after what has been a very cloudy weekend. still quite a bit of cloud in the east, some going into the central lowlands but as the day goes on, most areas brightening very nicely. some punchy showers possible again, though, across the midlands and north wales, maybe a few in the south—east. the risk of some showers in the south—west later in the afternoon. again, 16 or 17 degrees the potential highs, particularly away from the east, where we keep that easterly breeze. those showers are actually tied in with a weather front which is not too coherent at the moment but looks like it could mean business by tuesday, bringing some heavier rain into the south of the uk. of course, it is the school holidays.

if you have outdoor plans for tuesday, stay tuned to the forecast because the position of that weather front looks like it may alter slightly during the course of the next 2a hours or so. you will notice for tuesday, a cooler scene generally across the uk, with highs of 12 or 13. for much of the week ahead, the temperatures are going to struggle to get up to the mid—teens at best. there will also be a lot of cloud around but by the end of the week, it should start to feel much more springlike once again.