Two brothers have been arrested by the U.S. Department of Justice for attacking the Ethereum blockchain and stealing $25 million of cryptocurrency during a 12-second exploit, according to an indictment unsealed on Wednesday.The indictment charges Anton Peraire-Bueno, 24, of Boston, and James Pepaire-Bueno, 28, of New York, with conspiracy to commit wire fraud, wire fraud and conspiracy to commit money laundering.The charges are significant because they represent a first-of-its-kind criminal acti...