Stefan Tomas, Developer, CTO of Ripple Lost password to access with the amount of 240 million dollars (7002 BTC): "Being your own bank is a bad idea. We buy shoes from those.

James Howells, British developer. For 10 years, he has been unsuccessfully trying to find his hard drive with 7500 BTC in the city dump, which he mistakenly threw away in 2013.

According to a report by Chainalysis, up to 3.79 million bitcoins, or almost one in four bitcoins, have been lost to date. Most likely forever..

Gabriel Abed from Barbados lost about 800 bitcoins (about $25 million) after his colleague reformatted a laptop in 2011, where the private keys to a bitcoin wallet were stored..

I've spent hundreds of hours trying to remember the password to my accounts, says Los Angeles-based entrepreneur Brad Yasar. Brad owns several thousand BTC, which he acquired in the early.

On February 28, 2014, the Tokyo-based Mt.Gox exchange filed for bankruptcy. As a result of a software vulnerability, 650,000 BTC were stolen from the exchange. About 127,000 people lost bitcoins.