Employees at some of Wall Street's largest hedge funds recently picked up phone calls that sounded as if they were coming from trusted colleagues at the very top of their firms. The attempted campaign targeted several of the world's biggest investment firms, including Point72 Asset Management, Two Sigma Investments, Citadel and Millennium Management, according to Bloomberg. AI Voice Clones Target Elite Investment FirmsBloomberg reported that attackers used AI-generated voices to imitate senior executives and colleagues during telephone conversations. Investigators believe the attackers cloned voices using publicly available audio, including conference presentations, interviews and earnings calls, before placing convincing phone calls to employees. Improvements in voice synthesis allow attackers to recreate not only how someone sounds but also their cadence, pauses and speaking style.