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Chinese threat actors have been targeting Chinese-speaking students in the United Kingdom with a unique phone scam that aims to steal their personal information with repeated phone calls and voicemails that are hard for victims or carriers to block.
A group dubbed RedZei — or RedThief — calls victims once or twice a month from a unique UK-based phone number, leaving an “unusual” automated voicemail message if the receiver does not answer, revealed cybersecurity researcher Will Thomas in a blog post published just before the new year.