An Australian promoter of an alleged $US2.6 billion ($3.7 billion) cryptocurrency Ponzi scheme / BitConnect (whose wife went missing last year) has had his assets frozen and been hit with a travel ban as part of an investigation by international authorities.

https://www.smh.com.au/business/markets/bitconnect-bust-australian-man-whose-wife-went-missing-at-centre-of-asic-sting-20190103-p50pfn.html