The tech giant said the hackers belonged to a state backed group, which was a highly skilled and sophisticated actor. In a blog post, Microsoft said the hacking campaign made use of four previously undetected vulnerabilities in different versions of the software. The security flaws allowed the hackers to remotely plunder email inboxes. Microsoft's Threat Intelligence Centre attributed the attacks with high confidence to Hafnium, a group assessed to be state sponsored and operating out of...

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