https://www.reuters.com/article/us-crypto-currency-crime/cryptocurrency-thefts-scams-hit-1-7-billion-in-2018-report-idUSKCN1PN1SQ

Cryptocurrencies stolen from exchanges and scammed from investors surged more than 400 percent in 2018 to around $1.7 billion, according to a report from U.S.-based cyber security firm CipherTrace released on Tuesday.