Share photos on WhatsApp? You should be careful. There is a new bug in the service that may lead to strangers viewing the photos that you shared with your contacts.

Graham Cluley, a UK-based security researcher said, the privacy flaw appeared with WhatsApp's newly-introduced web interface.

"17-year-old security researcher Indrajeet Bhuyan has discovered a privacy hole in WhatsApp that could expose your account's profile photo to complete strangers, even if you have set it to be viewable to Contacts Only," Cluley wrote on his blog . "Sure, it's not the most serious privacy breach that has ever occurred, but that's missing the point. The expectation (of users) is that WhatsApp will only allow their photos to be viewable by those who the user has approved."

WhatsApp Web, which was released recently, allows WhatsApp users to access the service in a browser. However, it is not a true web service. Even if a user wants to use WhatsApp on the web, he or she needs a smartphone with WhatsApp on it.

"Today, for the first time, millions of you will have the ability to use WhatsApp on your web browser. Our web client is simply an extension of your phone: the web browser mirrors conversations and messages from your mobile device -- this means all of your messages still live on your phone," WhatsApp had said.



Bhuyan demonstrated the bug in the following video that he posted on YouTube.

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