Voice data collection is becoming a marketing boon, but the practice is also setting off privacy alarm bells, ABC reports. Voice data now powers targeted marketing based on personal information extrapolated from recordings and privacy experts warn cyber criminals could breach stolen voice data to impersonate data subjects for access to more information. According to research firm Global Market Insights, the total global voice recognition market exceeded $3.5 billion in 2021 and could reach $10 billion by 2028.