SEOUL, Jan. 19 (UPI) -- North Korea-linked hackers are using emails that impersonate human rights organizations and financial institutions to lure targets into opening malicious files, according to a threat intelligence report released Monday by South Korean cybersecurity firm Genians. The campaign, dubbed "Operation Poseidon," has been attributed to the Konni hacking cluster, a group linked by security researchers to Pyongyang-backed cyber operations and known for conducting long-running