Financial tech company Ripple Labs Inc. and its CEO sued YouTube for trademark infringement over failing to shut down a cryptocurrency scam on its platform.

In a complaint filed Tuesday in the U.S. District Court for the Northern District of California, Ripple’s Boies Schiller Flexner attorneys asserted that YouTube had committed a “deliberate and inexplicable failure” to address a scam claiming to give away Ripple’s XRP cryptocurrency. The suit asserts that the scam, which uses CEO Bradley Garlinghouse’s likeness to spear phish users, has “defrauded victims out of millions of XRP valued at hundreds of thousands of dollars.”