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An electric board shows exchange rates between the South Korean won and bitcoin at a cryptocurrency exchange in Seoul.   © Reuters
Cryptocurrencies

Hack casts North Korea's shadow over crypto exchanges

Youbit heist in South Korea spotlights security vulnerability

SOTARO SUZUKI, Nikkei staff writer | North Korea

SEOUL -- The hacking and collapse of a South Korean cryptocurrency exchange this week has heightened suspicions that the North is targeting the virtual coins as a source of foreign currency, raising concerns over the security vulnerability of such exchanges.

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