Losses from cryptocurrency-related frauds and scams increased 45% in 2023 from 2022, totaling more than $5.6 billion, as scammers increasingly took advantage of the speed and irreversibility of digital asset transactions, the U.S. FBI said Monday. Cryptocurrencies like bitcoin and ether have become more popular as token prices have soared to new highs and as exchange-traded funds tracking their prices have hit the U.S. market this year. That growth, however, has also increased the use of cryptocurrency by criminal actors, the FBI's Internet Crime Complaint Center said in a new report.