New Delhi, Nov. 28 -- South Korea suspects that a North Korean team may be behind a major cyberattack on Upbit, the country's largest cryptocurrency exchange, which resulted in the unauthorised withdrawal of 44.5 billion won ($30.4 million) in cryptocurrencies on Thursday, the Yonhap News Agency.

South Korean authorities are inspecting Upbit's systems and suspect hackers tied to North Korea's spy agency, known as the Lazarus Group, were behind what the exchange called "an abnormal withdrawal," reported Yonhap.

The Lazarus Group has been linked to several crypto heists in recent years, with the US Federal Bureau of Investigation (FBI) calling North Korea's cyber operations "one of the most advanced persistent threats."

The recent attack...