CoinVoice has recently learned that on October 9, Yonhap News Agency quoted data submitted by Upbit operator Dunamu, reporting that South Korean cryptocurrency trading platform Upbit has suffered 159,661 hacker attacks in the first half of this year, 2.17 times that of last year. Upbit lost about 58 billion won due to hacker attacks in 2019. Dunamu said that it has since controlled the proportion of cold wallets to more than 70%. [Original link]