SITUATION EXPLAINED: Major hedge funds hit by a wave of AI-powered voice phishing attacks. • Point72 told investors Wednesday it was attacked, with initial indications no client information was stolen • Two Sigma, Citadel, and several private equity firms were also targeted, Two Sigma, which manages $75 billion, says it thwarted the attempt • The technique is vishing, where attackers use AI to mimic the exact voice, tone, and phrasing of executives or colleagues to get employees to grant…