Frenchman Mark Karpelès, who has lived in Japan's capital Tokyo since 2009, was arrested six weeks ago in connection with the disappearance of hundreds of millions of dollars worth of bitcoins — a decentralized, virtual currency that saw the light of day in 2009.

Authorities suspect the 30-year-old former CEO to have personally made off with $2.6 million worth of his customers' bitcoins. Karpalès — who faces up to five years in prison if he is found guilty — has denied the charges. According to AFP, Karpalès may have spent the money on software rights. There are also reports he used some of the cash to buy a $48,000 bed for his luxury apartment in Tokyo.

"Technically, it's very easy for the CEO of a bitcoin exchange to steal from his customers, because he has access to their bitcoin wallet," explained Justin Ganivet, an expert at cybersecurity and risk management firm Lexsi.

Karpelès was first arrested by Japanese authorities on August 1st, on suspicion of creating fake bitcoins worth more than $1 million in 2013.