Users who signed up were contacted by scammers to convince them to deposit funds into the fake schemes, the regulator said. "We are aware of a consumer who lost more than A$650,000 ($480,000) due to one of these scams ... this is disgraceful," Sims said.
Australian iron ore magnate Andrew Forrest, chairman of Fortescue Metals Group, launched criminal proceedings against Facebook last month over scam ads, including ones using his image to promote cryptocurrency schemes.
The corporate regulator, the Australian Securities and Investments Commission (ASIC), usually handles financial fraud complaints against companies. The ACCC, which is seeking financial penalties, said it was given temporary powers to file the lawsuit.