Now on bbc news, its time for click. This week how to uncover deadly secrets online. The secret codes attracting more women into cybersecurity. And tenet, the 0scar winning secrets of making time to backwards. Audio tracks backwards. Welcome to click. We all know how easy it is to fake things online these days, not even photos, voiced or videos are safe, as we well know, right . Yes, weve worn fake clothes, we have faked our voices with software. Ive even been entirely faked with a virtual me although i am convinced that she looked ten years older. I Whole Heartedly agree. Later in the program, were going to see the hollywood version of this, when we look behind the scenes at the film, tenet. Spoiler alert it wasnt all real. But these days, you dont need a big budget to do this. Just think of those Zoom Backgrounds that weve all been looking at. Admittedly, the edges of your hair do often give the game away, but these pictures are pretty good, a lot better than we would have imagined they could be five years ago. Harp Glissando so, check out the next advancements. This is where zoom can put meeting participants into a meeting room, a real one thats not real, although i think something has gone wrong with the sizing here, dont you my seat� s way too low and youre far too small. Theres a variety of scenes. Do you want to meet me for a coffee . Look, here we are in a coffee shop. Yeah, i will have a latte, please. Id say this is cute but does it make you feel like were in the same room, really . No, i still feel like were on a zoom call. Maybe this is one for the audience, rather than the participants. And while there is plenty of fakery around, the truth is out there, as a certain fox once said, and there are some people who know where to look. The internet is just such a vast place, and like theres so much out there thats just public, so many ways that information can be manipulated. And even, like, political news can be manipulated in someone� s favour, so that is where i think open Source Intelligence is useful. 18 year old Computer Science Student Kenyon Lee has gone viral on tiktok by using so called open Source Intelligence, collecting and analysing publicly his main trick. He uses objects in a shot to guess heights. Now, kenyon did do this test on a video of me that he found online and well come back to that later. Mainly on account of it being the most embarrassing video ive ever posted online. But we have some serious stuff to talk about first. Look, trust me on this. There are groups of people out there who are using open Source Intelligence techniques to do much more serious detective work. These are Anatoliy Chepiga and alexander mishkin, widely believed to have been responsible for the Salisbury Poisonings in 2018. This week, a collective of open Source Intelligence investigators revealed theyd also managed to link to these two men to the bombing of a czech Ammunition Depot four years previously. That collective is bellingcat, and weve met its founder, eliot higgins, before. In 2014, it was just him, now he has a foundation in the netherlands, 20 staff members, and a growing network of volunteers all across the world. I caught up with eliot again recently and he told me that flight logs of chepiga and mishkins trip to the uk in 2018 were revealed by a russian news site, and that showed that their Passport Numbers were only a few digits apart, which was to say the least, unusual. That caught the interest of bellingcat, in particular our investigator christo grozev. So, christo looked at these databases and discovered these two individuals didnt exist before 2012. Theyjust popped into existence in these databases in 2013, which was suspicious. He then approached basically an Information Broker who sold him these domestic passport registration documents, and stamped on them was the number of the Russian Ministry of defence. And it became clear they were not ordinary people, that these appeared to be russian intelligence officers. Bellingcat� s investigation didnt end there. Their evidence showed that scientists linked to the 2018 poisonings were following russian opposition leader, Alexei Navalny on a0 separate trips in 2020. That includes the journey where he was poisoned. It seems that the site we stumbled on with the skripal story, is this entire kind of network of russian assassinations using nerve agents. And that sounds completely insane, but, you know, we have the receipts. We have the phone records. We have everything to show this is happening. And this is basically unique to russia because russia has this acute, massive amount of corruption where data, phone records, even if they are spies� are freely available to anyone that does a bit of googling. What tools or software do you or your investigators use when youre looking at photographs and trying to work out where theyve been taken and when you are Tracking Information back into the internet . We have an online tool box, which is basically loads of links that anyone can go and look at and use them themselves. Probably one of the most powerful tools is google, google earth, google streetview. They are extremely useful. Resources now allow you to track aircraft, like flightradar, marine traffic allowing you to track vessels. Photographs and videos can out very convincingly be doctored, does that cause you a problem, or is that a new investigative stream for you . You have concern about deep face and there is concern on social media about things being retweeted. We approach stuff as evidence so when we look at that kind of thing, we say, here is a video of tom cruise playing golf. Can we find out the golf course . Or if someone is giving a speech, it is going to be from a longer piece of media. People dont give two minute on 20 seconds beaches. They are usually longer. Speeches. So we look for that original footage. We look at the account who shared it. Is it shared by an official News Organisation . We look at the account behind it. Have they shared things before . What has that stuff been . You look at the different dimensions of that video both inside the video and how it has been shed and propagated online. Absolutely fascinating stuff. That was elliott higgins. Right, i cannot put this off any longer. It is time to go back to kenya. The tiktok person who guessed your height . The video he chose was my Ice Bucket Challenge from years ago which, if you have not seen, well, you are probably one of the lucky ones. I have seen it. And i cant unsee it. Ijust cant get enough of you. I was trying to raise money for a good cause so i decided to go full outrageous and i kind of forgot that the internet never forgets. Ok, here it comes. I decided to look at the Ice Bucket Challenge. I marked the top of his head and scaled his height using the bucket. This translate to about 174 and three quarter centimetres. There was a point to all of this. Did he get your height right . He said 174. 75. Lets have a look. Oh, wow, 175 not bad, not bad at all. Not bad considering he did that from the dimensions of a bucket. Yes, good job he didnt use a three and a half inch floppy disk. Hello, and welcome to the week in tech. Lyft was sold to toyota. That was for 550 million. And tiktok said it would open a european transparency and Accountability Centre in ireland. The announcement follows concerns over how the chinese Social Media Giant serves its young users. The first Triple Drop Drone Hit the skies. This Electric Device can carry and deliver three separate loads although it can only stay in the airfor a maximum of 90 minutes. Two College Engineers Won Mit Awards for their invention. This remote controlled robot helps farmers stay safe while it levels and distribute the crop. It can dig itself out of grain as well. And ai labour this autonomous arm uses al to identify nearby apples, leaves and branches, all so it can plan the path for its pneumatic suction plucker. It can pick and deposit it apple in as few as seven seconds how do you like them apples . This is huawei mate x2, the third iteration of its Folding Phone and easily the best yet. The Folding Screen is now protected inside the phone when closed, which makes a lot of sense. It has been a pleasure over the last years to be able to try out so many of these Folding Phones and see this new category of devices emerge and all the manufacturers have had such different approaches. Huaweis was always unusual because it wrapped the folding display outside the device which looked super cool but it did leave the display vulnerable. This time they are taking a leaf out of samsungs book. They have put the Folding Screen on the inside of the phone where is it is where it is protected. They have taken a few leaves. This is very similar to the galaxy z fold2. From the Fingerprint Reader on the side here to the speaker on the side here to the speaker on the bottom to the Camera Button and the chunky hinge. I thought folding fines might be the end of every phone looking the same but here we. The mate x2 is a much better design than the original. The screen snaps into place. This is a big improvement. This is the first one of these appeal comfortable enough to throw in my gym bag like i would with my regular telephone. Another fantastic bit of engineering. When i first started using it, it felt really comfortable in my hand. I couldnt quite put my finger on why. Ive been very scared of dropping these Folding Phones because they are typically very expensive and fragile. But, with this one, i never felt like i was going to drop it. It sat comfortably in my hand. And this is why the phone is wedged shaped which moves the centre of gravity closer into your right hand, so when youre holding it here, there is less weight over here. It weighs about 300g, which is more than a regular phone but because of this, it does not feel like it. I also like the outside display because, when it is close, it is a full size regular smartphone with no compromise. You get pretty the same experience as you would with a regular huawei smartphone, including the great camera array. Great stuff. That was chris fox. The secret services have always been secret. But it seems that something is in the world in espionage are changing. M15 has just joined instagram. But other areas have not. For example, the number of women working in the field stands at just 16 . But a schools competition is hoping to change that. To see the role that women have taken over the years in cybersecurity i first took a trip back in time to look at some pretty special computers and coders that use them. Im here at the National Museum of computing on Bletchley Park, a place full of computers and memories, not least of the world war ii codebreaking. Today, it is largely associated with the man who broke the previously unbreakable german code. Today, it is largely associated with alan turing, who broke the previously unbreakable german code. It gave the allies the edge. The 63 of those working out of Bletchley Park were in fact women, many of them working on the world famous colossus. The Job Description they gave to Women Codebreakers are different to those given to men so, if you go and look at the paper records, you will find that women are described as typists or translators or clerical staff. And that disguises what they were actually doing and this is because a man were on a different pay scale were on different pay scales so the codebreakers had who were on a different pay rate did not tell you anything about the quality of what they were doing. What should alan turings legacy be . I have written a book about Alan Children turings reflections. Ive been writing a book that is trying to get away from the sepia tinted view. He was always looking at the future and sort of like Science Fiction and thinking of a meaning things like Machine Learning which is obviously completely impossible in the late 1940s. While many women were employed in codebreaking then, the imbalance in numbers between Men And Women In Cybersecurity Today is huge. To help put things right, the National Cybersecurity centres cyberfirst girls competition is trying to find the next generation of female codebreakers. It involves solving puzzles to do with coding and logic. Cryptography, cybersecurity networking. And its really fun. The confirmation promotes the idea that girls can code. Here i am today. Idea that girls can code. Here i am today. It idea that girls can code. Here i am today, it is idea that girls can code. Here i am today, it is officially i am today, it is officially competition day and i am very excited. We will be looking at the topics now. In the semifinals, we could see. The leaderboard and i remember everyone was rushing i to do more challenges. 12 and 13 year old girls from across the uk have been competing in this years challenge, which has moved online. You may think that is where it should be, anyway, but it is a collaborative and creative process. We need to succeed at our mission to keep the uk safe, to keep people who live in the uk safe to work and live online. And we need all kinds of people to do that, just to represent the society that we are working for, but also to get all of these different perspectives and girls sometimes bring a different perspective. And some would argue that women have a real knack for it. Women are good at linguistics, which makes them irreplaceable at any natural language processing services. They are also very attentive to detail and good at Pattern Recognition and overall, patience, which are requirements for any science related jobs. With an abundance of all those qualities, this years contenders are certainly feeling the pressure. Having battled their way through ethical hacking, cryptography, decoding, logic tasks and much more. While waiting to find out who wins this year, i spoke to an ex finalist who is now studying cybersecurity at university. And because she is set on a career in the field afterwards, we had to keep her identity after wraps. I think definitely because it is computing there is more pressure to do well because i had to prove myself because i am a girl. There was this initial push and that i was hooked. You see all these women were inspirational and you want to live up to them and you dont want to let all the other women down and you want to help inspire the young people yourself. Back to the competition, and The Moment Of Truth is upon us. The winner is inaudible cheering and applause. I really enjoyed the logical coding ones, but i also really enjoyed cybersecurity, because it required you to think in different ways and use different methods of hacking. It really makes you think of how easy it actually. Is to access other peoples data and how important i it is to keep your computer safe. I i had to connect a circuit board, and then once you covered your hand, it would start beeping. And we figured out those Beeping Noises when morse code, so like dots and dashes, and wrote read those down and found out what those were. In the cryptography section, so we if you have any to sendm like, a coded message to someone, i learnt a lot of different types of codes. After the competition, i think a cyber after the competition, i think a Cyber Security after the competition, i think a Cyber Securityjob after the competition, i think a Cyber Securityjob is after the competition, i think a Cyber Securityjob is now. After the competition, i think a Cyber Securityjob is now anj a Cyber Securityjob is now an option a Cyber Securityjob is now an option for me congratulations to the girls at Highgate School what an inspiring story one of the few films i got to see the cinema last year was tenet which, as a massive geek, i absolutely loved it. And i know you saw it twice which i dont think i have ever done which i dont think have ever done , done yes, the second time with subtitles, which done yes, the second time with subtitles, which i done yes, the second time with subtitles, which i really subtitles, which i really recommend, because it helps you understand what on earth is going on. This is a film where half of the stories going forwards and half the story is going backwards at the same time, in the same scene so maybe it is no surprise that it won the oscar for best Visual Effects . Yeah, and if you did see it, and you wondered how they got cars crashing and building exploding in both directions at same time, well, the answer may surprise you. Inversion. Aim it and pull the trigger. Youre not shooting the bullet, youre catching it. Whoa. Doing Visual Effects for a Christopher Nolan film i imagine is different from the majority of Big Budget Hollywood Films with l a lot of Visual Effects. Because his approach is very much about finding ways to film practical elements. Wherever possible, we wanted to find ways of filming real components and mixing it up a little bit so they felt very. Real and grounded in the real world, but still had that slightly odd kind of it wasntjust a case of filming forwards scenes i and reversing them, l it was more than that. More interesting and more complicated. Make a good example was when we have cars pulling away quickly and they| are in an inverted car, you would expect the wheels to spin or throw some dust l or ravel out backwards. What we did for those, we found a way of dragging a car backwards while its wheels were spinning forwards, so it threw dirt out backwards, but it was going in the wrong i direction. So we inverted the thing, the car pulling away and. And sucking dust back into the wheels. So that was the sort of approach where we found a practical, real world event and then just i sort of turned its on its head a little bit so it felt real but wrong. You want to crash a plane . But not from the air dont be so dramatic. Well, how big a plane . That part is a little dramatic. The plane crashing into a building talking to people since the film came out, everyone assumes that. That is largely cg, or must be components of that must be cg. But in reality, that i was actually achieved as a practical event where we used a full size, real plane, and built a set and towed the plane into the set and all of the Pyro Explosions and everything that is in the shot for real. There were Visual Effects involved in that we had l to clean out the tow ropes and we added jet blasts i to the Engines Cgi Trees to be burnt, | but really the vast majority, the chunk of that shot was in camera, and so it is i kind of turning it on its head again a little bit in that people assume that it is cg but it isnt, or there are some major components of it that are cg. The end scene in the film obviously contains a lot of big explosion events, and there are combinations of forwards i and backwards explosions. You cant train an explosion to go backwards. So so when there is a combination of two things, one has been added so we did a lot for the sequence where there is a minefield and people are in trucks running up and down the hill with minds going off. We used a combination of practical shot elements, but also cg explosions which had to incidentally match exactly the practical ones because they were right next to each other. Another major event. In the end Battle Scene Where a building is simultaneously blown up by an inverted group. Of people and a normal group of people, so it is simultaneously exploding and imploding. So, we built two large or they were one third scale ten storey buildings, i two matching buildings, and we filmed each of them i from a matching camera angle and we blew one up at the top and one at the bottom. And then we could reverse the film and composite the two together, reverse one of the films and composite the two together, so this building had this sort of simultaneous exploding and imploding event. This reversing the flow of time. Doesnt us being here now mean it never happened . Talks backwards. 0k i think spencer has gotten a bit carried away. As ever, i think you can find us on the right order on social media, youtube, and instagram on bbc click. Talks backwards. Ill leave him to it. Thanks for watching, and well see you soon talks backwards. Hello again. Well, there probably arent too many of you that escaped with a completely dry day today. Its been a day of sunshine and showers but those showers have been really widespread. So, yes, although skies looked like these at times, other times we had the heavens open. And this one, quite an impressive shower bringing a covering of hail to the roads and pavements of leek in staffordshire. You can see just how extensive todays showers have been nationwide, really and although they are beginning to fade away now, there are still a few left over. Now, the reason weve had so many showers during the day is because over the last few days, weve had a lump of Cold Air Move across the uk, and that gets heated strongly by the may sun, which causes the air to rise, causes those showers to break out. And weve got the same kind of mechanism with us for the forecast into sunday. Now, right now, most of the showers have cleared out of the way just one or two left over for scotland to take us into the first part of the night. Its another cold night, though, with clearing skies, light winds and a widespread frost. Temperatures getting down to about 2 or 3 in the very coldest areas. So a cold start to the day Sunday Morning but a lovely start with clear, blue skies for many of you. Through the day, though, showers will start to break out, initially across the north west of the country, and then theyll become really extensive for most areas as we head into the afternoon. Probably some of the heaviest showers across central and eastern england, eastern areas of scotland. And those temperatures, well, a bit disappointing, really, for this time of year highs 11 14 degrees for most of you. And talking about disappointing weather, here comes your bank holiday. Yeah, its an area of low pressure coming in off the atlantic, bringing wet weather, bringing windy weather, bringing fairly chilly weather as well. Now, it may will start off bright across eastern areas of the uk, but outbreaks of rain will quickly spread in from the west. It might well be cold enough even to have a little bit of snow mixed in of the highest ground in scotland and northern england, and its going to be pretty windy. Pretty windy and pretty chilly, really, for the time of year. Temperatures doing well enough to get into double figures across england and wales. Further north, scotland and northern ireland, about 7 9. Maybe the far north of scotland the place to be for the best of the weather. After that, it stays pretty showery, i think, for most areas and we could see further low pressures coming in from the south west. Thats your latest weather. This is bbc news. Im Maryam Moshiri with the latest headlines for viewers in the uk and around the world. A national day of mourning is being held in israel to remember the victims of fridays crush during ajewish pilgrimage. A lockdown in the indian capital, delhi, has been extended for another week in the face of rising Covid Infection levels. North korea hits out at the united states, accusing the Biden Administration of girding itself for a showdown. The american actress and 0scar winner 0lympia Dukakis has died at the age of 89. And an icon of manhattan, the empire state building, turns 90