Also: Former Hodlnaut CEO Charged and Stake DAO Hit by Exploit Every week, ISMG rounds up cybersecurity incidents in digital assets. This week, the U.S. sanctioned Iran's largest exchange, ex-Hodlnaut CEO faced charges, the U.S. Securities and Exchange Commission sued over a $12.3M AI crypto scam and exploits hit Gravity Bridge, Stake DAO and Gnosis Pay.