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SEOUL (Reuters) – South Korean cryptocurrency exchange Bithumb said 35 billion won ($ 31.5 million) worth of virtual coins were stolen by hackers, the second local exchange targeted in just over a week as cyber thieves exposed the high risks of trading the digital asset.
Bithumb said in a notice on its website on Wednesday that it had stopped all trading after ascertaining “some cryptocurrencies worth about 35 billion won were seized between late yesterday and early morning today.”
The exchange, the sixth busiest in the world according to Coinmarketcap.com, said it had stored “all clients’ assets in safe cold wallets,” which operate on platforms not directly connected to the internet.
It added that the company would fully compensate customers.
The Bithumb theft highlights the security risks and the weak regulation of global cryptocurrency markets. Global policymakers have warned investors to be cautious in trading the digital currency given the lack of broad regulatory oversight.
In Ho, a professor at Korea University’s Blockchain Research Institute, said the stolen coins were most likely to be from the more insecure ‘hot wallets.’
“Since coins in the cold wallets are not at all wired to the internet, it would have been impossible for hackers to steal those in cold wallets unless they physically broke in,” said In, a blockchain expert at the research center.
Bithumb did not immediately respond to Reuters’ request for comments, and its statement did not say whether the stolen coins were stored in its ‘hot wallets’.
Mun Chong-hyun, chief analyst at ESTsecurity, said digital coins would continue to be juicy targets for hackers around the world.
“No security measures or regulations can 100 percent guarantee safety of virtual coins. It is held anonymously and in lightly-secured systems, which makes them an irresistible target,” Mun said.
On the Luxembourg-based Bitstamp, bitcoin BTC=BTSP was down 1.8 percent at $ 6,612.92 by 0351 GMT, extending losses as a series of intrusions on cryptocurrency exchanges in recent weeks sparked concerns over security.
It has fallen roughly 70 percent from its all-time peak hit around mid-December 2017.
On June 11, another South Korean cryptocurrency exchange Coinrail said it was hacked. The cyber attacks come after a high-profile theft of over half a billion dollars worth of digital currency at Japan’s exchange Coincheck earlier this year.
In January, South Korea banned the use of anonymous bank accounts for virtual coin trading to stop cryptocurrencies being used in money laundering and other crimes. But the government said it does not intend to go as far as shutting down domestic exchanges.
Bithumb trades more than 37 different virtual coins, according to Coinmarketcap.com
Editing by Shri Navaratnam and Jacqueline Wong
HONG KONG (Reuters) – China’s Tencent Holdings Ltd (0700.HK) saw its shares down 4.51 percent at the midday trading break on Friday after the internet firm’s largest shareholder, Naspers Ltd (NPNJn.J), said it would lower its stake for the first time in 17 years.
The Hong Kong-listed stock opened 7.8 percent lower at HK$ 405, its lowest opening price since Feb. 9, before regaining ground to HK$ 419.6 by noon. The benchmark Hang Seng Index .HSI was down 2.81 percent.
A day earlier, the stock fell 5 percent following Tencent’s late Wednesday report showing quarterly revenue missed estimates as well as expectations of margin pressure, although profit beat forecasts.
Friday’s decline wiped $ 24 billion (17 billion pounds) off Tencent’s market value, though at $ 508 billion, it is still Asia’s most valuable listed company and fifth globally behind Apple Inc (AAPL.O), Alphabet Inc (GOOGL.O), Amazon.com Inc (AMZN.O) and Microsoft Corp (MSFT.O).
South African media and e-commerce group Naspers said on Thursday it planned to sell up to 190 million Tencent shares, or 2 percent of its holding, in a sale that could earn Naspers up to $ 11 billion. It also said it had no plans to further reduce its holding for the next three years.
“The funds will reinforce Naspers’ balance sheet and be invested in classifieds, online food delivery and fintech globally,” said CICC analyst Natalie Wu. “We think it is a good opportunity to buy into dips given Tencent’s solid fundamentals.”
Jefferies analyst Karen Chan said, “Given Naspers’ largest single shareholding and board representation in Tencent, we believe its stake sale is unlikely to be a reaction to Tencent’s quarterly results. Instead of a timed profit-taking move, we believe this is more to improve Naspers’ own free cash flow and allow it higher flexibility in pursuing investment opportunities.”
A Tencent spokeswoman said it was informed and supportive of Naspers’ decision, and that Naspers’ intention to keep its remaining stake for the next three years demonstrated its confidence in Tencent.
Reporting by Sijia Jiang and Donny Kwok; Editing by Paul Tait and Christopher Cushing