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The warning that WhatsApp displays on its desktop app and web app when a user receives a “View Once” media.Image Credits:TechCrunch/screenshot

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The warning that WhatsApp displays on its mobile apps when a user tries to take a screenshot of a “View Once” picture or video.Image Credits:TechCrunch/screenshot

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WhatsApp , the most democratic end - to - last encrypted message app in the worldwith more than two billion users , allow users to convert pictures and videos that disappear before long after porta .

But a bug in how WhatsApp implements its so - called “ View Once ” feature in its web internet browser - based web app allow any malicious recipient to display and save up the movie and video , which should fly right away after being viewed .

The “ View Once ” feature is designed to work only on WhatsApp ’s mobile apps on Android and iOS . WhatsApprolled out the feature of speech in 2021 .

In typical circumstance , when a user get a “ View Once ” picture or video while using WhatsApp on the screen background app or on the connection app , the exploiter will see a word of advice that the picture or television can only be opened using WhatsApp on their phone .

As an added privacy protection , WhatsApp prevents users from claim screenshots or screen recording of “ View Once ” ikon and video in its Android and iOS apps .

Tal Be’ery , asecurity research worker who has been researching WhatsApp secrecy proceeds for several month , recently come across the bug . On Monday , Be’ery published a blog post detail his finding .

Be’ery provided TechCrunch with a resilient demo of the bug last hebdomad , in which he show he was capable to capture and save a copy of a picture that TechCrunch transmit as “ View Once , ” while he was using WhatsApp on the web .

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“ The only matter that is worse than no privacy , is a false gumption of secrecy in which users are led to believe some anatomy of communication are individual when in fact they are not , ” said Be’ery , who is the CTO and co - laminitis of crypto wallet Zengo , in his web log post . “ Currently , WhatsApp ’s ‘ look at Once ’ is a blunt kind of false privacy and should either be thoroughly fixed or abandoned , ” wrote Be’ery .

Be’ery reported the hemipterous insect to WhatsApp ’s parent troupe Meta through its official hemipteran H.M.S. Bounty platform on August 26 .

In response to TechCrunch ’s request for comment last calendar week , and days after Be’ery file his bug report , WhatsApp spokesperson Zade Alsawah transport a statement : “ We are already in the summons of stray out update to view once on web . We continue to encourage users to only send survey once messages to the great unwashed they be intimate and trust . ”

Be’ery is not the first person to find out about this bug . Be’ery and TechCrunch saw posts promoting multiple browser app extension phone that make it trivially easy to bypass the “ View Once ” feature while using WhatsApp ’s web app . TechCrunch has also come across participating discussions on how to bypass the feature on societal media . TechCrunch is not colligate to the posts as to not help malicious actors in exploiting the bug .

WhatsApp did not provide a timeline for when it plans to finish its updates to View Once .