A variety of
Amsterdam businesses, including 3 coffee shops, received an email threatening
them with hand grenades or shooting unless they pay 50 thousand bitcoins each.
It the payment is not made within one week the amount will be doubled. There have
been many incidents involving hand grenades and other explosives in Amsterdam since
the start of last year.
https://nltimes.nl/2018/10/31/amsterdam-businesses-threatened-hand-grenades-dont-pay-bitcoins