http://www.telegraph.co.uk/news/2018/01/28/britains-first-bitcoin-heist-trader-forced-gunpoint-transfer/

Benefits of a Transparent Ledger.

https://www.express.co.uk/news/uk/911723/Bitcoin-cryptocurrency-value-price-theft-Moulsford-Thames-Valley-Police-Danny-Aston

The four thieves dressed in tracksuits and balaclavas also wielded what appeared to be a gun — they are understood to have hit Mr Aston over the head.

Mr Aston was demanded to transfer a stream of funds to an account named by the four men.

He reportedly pretended to have completed the transaction - police confirmed later that no money was moved or stolen from the cryptocurrency trader.