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Hacken Group, the major cryptocurrency exchanges auditor, highly values the need for user awareness of the threats. Hacken offers recommendations on what to pay attention to and what to do to avoid such attacks. The hack was made because of a leakage of the private keys of KuCoin hot wallets. Hackers could obtain access to private keys as a result of a phishing attack by using exploits, viruses, and backdoors on employees. KuCoin’s hot wallet key pairs have not been changed for 3 years.