U.S. federal judge overturned the fraud and market manipulation convictions against Avraham Eisenberg, the main perpetrator of the Mango Markets attack, ruling that the $DeFi protocol is an open system and does not constitute "legal deception." The judge pointed out that the prosecution failed to provide sufficient evidence proving false statements in his actions. Although the case was dismissed, Eisenberg was sentenced to nearly four years in prison for a separate child pornography case and is currently serving his sentence. He still faces civil lawsuits filed by the SEC and CFTC. (Cointelegraph)