(FILES) In this file photo taken on June 17, 2014 in Washington, DC shows bitcoin medals.  US authorities arrested three men in an alleged fraud that raised $722 million from investors lured by fake bitcoin mining earnings, the Justice Department announced on December 10, 2019. Prosecutors described the scam as a "high-tech Ponzi scheme" run by the "BitClub Network," which took money from investors and rewarded them for recruiting new shareholders. / AFP / KAREN BLEIER / TO GO WITH AFP STORY  - "Florida city agrees to pay $600,000 ransom to hackers"
More than 46,000 people reported losing more than $1 billion in cryptocurrency frauds between the start of 2021 and June 2022. AFP

US SEC cautions investors about crypto assets' securities risks