Authorities in New York City said Thursday they disrupted an online fraud operation that stole millions of dollars by duping victims into making phony cryptocurrency investments. Brooklyn District Attorney Eric Gonzalez said his office seized 21 web domains that were being used by scammers in so-called "pig butchering" schemes, a term that refers to gaining victims' trust through dating apps or other sites and steering them toward bogus investments, the AP reports. "Pig butchering is a growing type of scam that defrauds residents of Brooklyn and the entire country out of billions of dollars every year," Gonzalez said in a statement.