A hacker has allegedly just stolen around $7.4 million dollars worth of ether, the cryptocurrency that underpins the app platform ethereum, by tricking victims into sending money to the wrong address during an Initial Coin Offering, or ICO. This is according to a company called Coindash that says its investors were sending their funds to a hacker.

On Monday, Coindash, which offers a trading platform for ether, was slated to launch its Initial Coin Offering. These are essentially crowdfunding drives that allow investors to own a stake in the app by buying digital assets called tokens. Initial Coin Offerings are an incredibly popular method of funding an app on ethereum, and some ICOs have raked in millions of dollars within minutes of going live. Even the silliest apps have been able to raise thousands of dollars in token investments during recent ICOs.