Frightening flaw found in iPhone app that's downloaded by default 'could be a national security threat'

More from Science & Technology

• FDA upgrades risk of recalled tuna that could PARALYZE you

• Trump axes program designed to save America from natural disasters

• Police: The text message you must delete and report to us immediately

• Sorry Flat Earthers! NASA scientist gives brutal response that instantly proves our planet is ROUND

• NASA gives pitiful excuse for why it left astronauts stranded in space for more than 9 months

• The beginning of the end for the Apple Watch? Global sales slump by 19% - as bored users dub their devices 'glorified notification screens'

• Apple tells 1.4b iPhone users to update devices NOW... or risk being attacked

• Revealed: The cities that have been hit with 'climate whiplash' - as scientists describe the bizarre pattern as 'global WEIRDING'

• China creates a powerful spy satellite that can see faces from more than 60 MILES away

• Mysterious radio signals are discovered coming from 'unprecedented' part of space

• California rocked by TWO earthquakes in less than 3 hours

• Vodafone is DOWN: Network crashes leaving thousands of Britons unable to use the internet

• Chase Bank to restrict key online feature used by millions every day

• Revealed: How to prevent apples from turning brown - and the results last for days, scientists say

• Four-man NASA rescue crew give thumbs up as they prepare to be swapped with stranded astronauts

• Sacred text banned from the Bible reveals what really happened during Noah's Great Flood

• Five hugely popular restaurants changing their recipes to appease RFK Jr

• Stranded NASA astronauts' return date is changed AGAIN

• Scientists on high alert after series of earthquakes strike near US volcano that's due to blow

• Cybersecurity experts claim X's cyberattack could have come from ANYWHERE - as Elon Musk insists Ukraine was behind the outage