he's also said to have described mr comey as a "nut—job". the revelations comes as mr trump heads to saudi arabia on his first foreign trip as us president. the wikileaks founderjulian assange says it's a personal victory that swedish prosecutors have shelved a lengthy rape investigation against him. but, mr assange said his legal battle with the us and britain would continue, and he would never forgive or forget that his name had been slandered. voting has ended in iran's presidential election after being extended for several hours beyond the time polling stations were meant to close. the interior ministry says that turnout was about 70%. results are expected to come in on saturday afternoon. coming up later on bbc news will be newswatch. first, though, it's click. welcome to the south coast of england, and the country's biggest fortification, dover castle. they say an englishman's house is his castle. this week, this castle is mine. like every other home in the land, it needs to be well defended, because these days, it is constantly under attack. the walls make it out

burglars, but today's digital invader is wily, and can worm its way in through the smallest gaps. last week's global cyber attack on companies in around 150 countries shows just how vulnerable systems can be, even if you are not called into clicking dodgy links. so this week, we're looking at cybersecurity. it's me versus the bad guys out there. and they might be small, but there's a lot of them. so what can i do to shore up my defences? one thing is through biometrics. gadgets already recognise our fingerprint, and now banks are starting to identify us using our voices. so how secure is it? is it possible, for example, to fake someone‘s voice? we asked dan simmons to give it a go, or most precisely, to find the one person who might stand a chance at breaking into his bank account. thanks, ben. well, one of the things that you might not know about me is that i am the only member of the click

team to have a twin brother. hi. his name isjoe, and we kind of sound quite alike. we kind of do sound quite alike. but i came out first, and hejust copied me. yeah, well, for this report, it's going to bejoe trying to copy me... together: ..as we try to break into a bank. but first, we're going to need some help. yep, i really think this guy is going to help us. right, good, good. all right, nice to meet you. if you'd like to sit down... what we're going to do first is i have this little analysis tool here. and what this will do is just detect, first of all, the pitch of your voice. this system that you're trying to break in is analysing your voice in lots of different ways.

so there will be about 100 different variables it is picking up on. hello, i'd like to access my account, please, today... hello, i wondered if i could access my account today. you see there are pretty big differences between them. so who do you think is the bigger adam's apple, out of both of you? i can't see mine. together: yayayayahh. .. it's the first time i've tried to use the telephone banking service, and i'm not set up, so i am hoping... laughs how many — how long do you want to make this? a bit shorter, ok, a bit shorter. that wasn't axactly the way you said it the first time. i'd like to take everything out, today, please. that was. i'd like to take everything out, today, please. that is — that is close. that's not true. that is not true. excellent, that is brilliant. thank you very much. no worries at all! what're you dressed like that for? well, we're doing a job, aren't we?

i've got a gun. you don't need a gun, do you? your voice is your weapon. take that off! erica is the voice of nice — nice is the voice security provider for citibank credit ca rd—holders in the us, among others. hi, nice to meet you, too. joe's going to try to break into my account, what chances do you think he has? very slim. what advice can you give me to try and break into his account? well, you've known him your entire life, so try to imitate his voice. she seems very confident about this — what — what why is it that you think that, maybe, my twin brother can't break into my account? voice biometrics is the most accurate form of identification there is for access into financial institutions. why? it registers over 100 different characteristics with voice. half of them personality and the half are physical. and you do look a little bit different,

and your voices are different, so you will have different vocal characteristics. so therefore, what percentage chance do you think i have? it would be one out of several hundred thousand. how do you make it so that i can access my account, even if, like, at the moment, i have a little bit ofa... coughs as i said, there's over 100 characteristics, and a cough or cold only affects about two. so we still have all those other characteristics to work with, and we still have identification. and has anybody fooled the system through the front door? basically, pretending to be somebody they're not? no. can i asked another question? it mightjust be a bit out the ballpark, but is this legal? i'm here to break into the account of dan simmons. joe, you really don't need the gun.

what do i have to do? let's give this a shot. 0k? hi, yes, i'd like to access my current account, if i can, please? yes, it's probably about £10, something like that. yeah. thanks very much. yeah, that's great. thank you. you failed — but close. wow, look at how close this is over here. look at that! if we come over here, it you can see there's the threshold level, and that — that is pretty close. that was not a bad first go. thatjust came out of nowhere. first go, very good. it came out of absolutely nowhere! very good. but that's how you test the system, isn't it? yes, we that's how we test the system. we tested with twins, and siblings, and imitators. you know, a fraudster wouldn't get three chances, and the reason a fraudster wouldn't get three

chances is that we would register the multiple failures, and it would dynamically increase the threshold on the third, and put a flag on the account. right, that is not to say, of course, that it's impossible, is it? it's not impossible, it's just very improbable. so, dan, your bank account is still safe, although your twin got away with some pretty cool stationery. yeah, the old fashioned way. were you surprised that the voice attack didn't work? yeah, iwas, actually. we really tried hard to match up our voices. you know, we used the voice coach and the rest of it, and itjust bubbled under what we needed and couldn't get in. what about the simpler stuff that we have been asked by banks in the last few years, like "my voice is my password," did you try that? oh yeah, we had a crack at that. to get into my account, my twin needs my sort code and my account number, things i have helped him outwith. he also needs to know my birthdate, but that's probably something

he already knows. the question is, can my voiceprint give me any extra protection? secret bank, we're not getting any bank names away. good afternoon. welcome to hsbc. oh, it's... please enter your sort code, or... oh, i've got this one. now, interestingly,it‘s the pin number, and the account number, which, if you are from the days from the old cheque—book, then both of those things you'd use to print objects. so if you've got an old cheque from somebody you already know that. ..your date of birth. he knows my date of birth because we share the same date of birth. after the tone, please repeat the phrase "my voice your password". my voice is my password. i'm sorry, i didn't catch that. after the tone, please repeat the phrase "my voice your password". my voice is my password.

welcome to hsbc advance. the balance of your account is £1.21p credit. i'm off to the bank! for your available balance... i thought it would be more than that, dan. laughs evil twin was in. perhaps more surprising when you consider the service providers test their systems with twins to improve security. i can get into other accounts, apparently, dan, so... hsbc told us: major security no no man works at an undisclosed financial

institution. 0h. he manages innovation, because they have an innovation unit. so what's he been innovating? just watch the way he uses his phone, because his security system is doing just that. and even with all his login details, i'll need to replicate how he holds, taps, and tilts his device. ha, hi! chris, would you mind lending me that for a moment? no luck. it's beaten me. that'll be yours, then. brilliant security tips there,

unfortunately i think they have arrived a little bit too late for me. still, there you go. thanks for watching and i really, really hope that i will see you soon! hello and welcome to newswatch, with me, samira ahmed. coming up: the party manifestos are all out. how well has the bbc done on explaining their policies fairly and impartially? and, are we hearing too many random opinions from not always

well—informed voters? with the main parties publishing their offers to voters, this week has seen the general election campaign in full swing. the bbc‘s political editor laura kuenssberg was on hand and on air with her analysis. here she is on thursday reporting on the manifestoes. conservatives‘ proposals, and first on tuesday reacting to labour's manifesto. and remember not so long ago in 2015 ed miliband made a few little tiptoes to the left of where labour had been and he lost that election. jeremy corbyn is making a much bigger step in the same direct of middle england are really ready for the policies that he believes

will be popular. and, of course, the complications of brexit means whatever else she is promising could be derailed by that becoming extremely difficult, and notjust hard to deliver but also potentially very nasty. so, broadly, though, as with any political idea leader for the mainstream, easier to say than to prove. some viewers object to what they see as a running commentary on what politicians are saying and doing during the campaign, with david jowett putting it like this. allegations of bias, as we've mentioned before in recent weeks, have been rife with some viewers feeling the bbc has given the lion's share of screen time and prominence to the labour party. tom and jan borland profess themselves: for the majority of

those contacting the bbc, though, the bias is in the other direction with rav dhillon speaking for many who feel: elsewhere, the bbc‘s economics editor kamal ahmed also came under attack after his piece on labour's manifesto on tuesday's news at six. those earning above £80,000 will pay a tax rate of 45p in the pound. if you earn above that amount the loss will be around £1100. for those earning £123,000 the rate rises to 50p. that could leave some with a loss of up to £23,000.