Japan's DMM Bitcoin says it lost over $300m cryptocurrency in 'unauthorised leaks'

Japan's DMM Bitcoin says it lost over $300m cryptocurrency in 'unauthorised leaks'

FILE PHOTO: A bitcoin is seen in an illustration picture taken at La Maison du Bitcoin in Paris, France, June 23, 2017. REUTERS/Benoit Tessier/File Photo

Japan’s cryptocurrency exchange DMM Bitcoin said on Friday that it had lost 4,502.9 bitcoin, worth about 48.2 billion yen or $308 million, in what the company called an “unauthorised leak”.