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Security bug in Facebook Messenger allows you to spy your chats


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If you are a Facebook Messenger user, pay attention because a security bug has been detected. A team of researchers from security company Cynet has detected a critical vulnerability that could jeopardize the privacy of conversations of the billion users that the messaging platform has.

The problem, which researchers have named Originull, uses a method that allows an attacker to use an external site to read the users' private messages, as well as view their photos and videos or consult the attachments in the conversations.

Usually, the browser protects the users of the platform making it only accessible from the Facebook pages. To circumvent this restriction, what cybercriminals have done is to use subdomains of the social network as a bridge to see the data, using a vulnerability present in the server that manages the chats. Thanks to this, it was possible to access private messages

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"If the user opens a web page that the hacker has directed to him (through a malicious advertisement, a security problem or through the hacker's own website), the attacker can see all the chats, photos and Attachments that the user sends or receives in Facebook Messenger, "explain in Cynet's blog. "This happens even if the user sends the messages through another computer or his personal smartphone."

The security bug affected both the mobile application and the browser version. However, after discovering the vulnerability Cynet experts reported the bug to Facebook Messenger, which has already remedied the security breach.

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