A Facebook Messenger vulnerability was recently discovered that would allow a hacker to modify or remove any sent message, photo, file or link. Fortunately, the breach was disclosed immediately to Facebook‘s security team, and the backdoor was patched up in short time.
In a blog post, Check Point head of products vulnerability research Oded Vanunu notes that by exploiting this backdoor, cybercriminals could change a whole chat thread without the victim realising.
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Source: Security Brief AU