Researchers from European cybersecurity vendor ESET have found previously undocumented custom backdoors and tools used by a relatively new APT group called Polonium. First discovered in June 2022 by the Microsoft Threat Intelligence Center (MSTIC), Polonium is a highly sophisticated, currently active hacking group, which appears to be exclusively targeting Israeli organizations for cyber-espionage purposes – they have not so far deployed sabotage tools such as ransomware or wipers.

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