These scammers literally make a living off of making shady transactions look legit. (money.stackexchange.com)
The EFCC had alleged that over $ 1.1 bn fraudulently exchanged hands in alleged shady transactions over the highly lucrative Nigerian oil well OPL 245, said to have been originally offered to Malabu Oil and Gas Ltd by the then Gen. Sani Abacha junta under controversial circumstances in 1998. (nigeriapoliticsonline.com)
There has been a plethora of reports by former Coinbase users speaking of shady transaction cancellations as well as unexplained account freezings / deletions. (captainaltcoin.com)