NiceHash Exchange Keeps Promise to Reimburse Victims of 2017 Security Breach by Blockchain NewsNovember 23, 2020 NiceHash is making good on its promise to repay victims of the 2017 security breach of its exchange, which saw over 4640 BTC stolen ($55,680,000 in Bitcoin at the time). (Read More) Source Tagged : 2017 / Bitcoin / Blockchain / Exchange / NiceHash / Press Release / Repayment / Security