“[On] September 28th 2019, the Fusion swap wallet was compromised, resulting in theft of 10 million native FSN and 3.5 million ERC20 FSN token,” reads a Fusion Foundation blog dated September 29.
The post then confirms the platform’s own wallet was the only one affected, as the firm had received no reports of compromised user wallets.
Later investigations revealed abnormal “wash-trading” behavior, and discovered the perp(s) had sold some of the stolen funds on obscure exchanges Bitmax and Hotbit.
Cryptocurrency exchanges OKEx, Huobi, Citex, Bitmax, and Hotbit have since suspended deposits and withdrawals of FSN tokens.
Curiously, the firm suspects this was an inside job. The announcement noted the private key of Fusion’s wallet had been stolen, and that the technology powering the platform “remains secure.”
“The Foundation deeply regrets this incident and its impact on the path of Fusion’s innovation,” said the firm. “While private key theft is an industry-wide risk and occurrence, we clearly must strengthen the protection around our private keys.”
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