London police seize bitcoin worth $667,000 from hacker
https://phys.org/news/2018-05-london-police-seize-bitcoin-worth.html
Once he obtained the data, West would then sell the material to market places on the dark web and convert his profits into bitcoin.
The London Metropolitan police discovered evidence of cyberattacks on 17 major firms including Sainsbury's, Asda, the British Cardiovascular Society and the Finnish bitcoin exchange.