I just read a story in the Guardian that reported that kidnappers in the Ukraine took a cryptocurrency trader hostage and put a price on his head for one million bitcoins!
The employee, a blockchain expert, must have been doing a great job at the exchange because the ransom was paid.
Police are investigating but since the ransom is in the blockchain it should be difficult to get the million bitcoins back.
You can read the full article here:
https://www.theguardian.com/uk-news/2017/dec/29/ukraine-kidnappers-release-hostage-after-1m-bitcoin-ransom-paid