How do you lose $400 million in crypto currency? That’s the question that one of Japan’s biggest crypto currency exchanges Coincheck is trying to answer. Coincheck’s co-founder Yusuke Otsuka said 500 million NEM coins worth about $400 milion were sent illicitly outside the venue. The news has spooked investors in Japan, where many investors are still wary of crypto currency exchanges 4 years after the Mt. Gox collapse, which was the world’s leading Bitcoin exchange at time, and Mt Gox hacking and collapse had crashed the price of Bitcoin by nearly 90% at that time from $1000 to $100 within a week. This new loss in Jan 2018 is one of the biggest of investor assets since Bitcoin’s launch. Japan’s Financial Services Agency is looking into the case.