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South Korean police are investigating cases where North Korean information technology (IT) workers disguised their identities to get jobs at domestic companies, Yonhap reports. The National Office of Investigation discovered the situation last year and has been looking into it, according to the news agency. The report does not specify how many workers or companies are involved, or what sectors they targeted. Korean media coverage so far is factual and brief, with no public reaction from blogs or cafés included in the supplied documents.