Google shares ‘Extortion email’ sample that US firms may end up losing millions to

Google’s cybersecurity teams warn of targeted data theft campaigns by the UNC3753 threat cluster against US companies. The group uses vishing and social engineering to gain access, exfiltrate sensitive data, and then extort victims with a three-day deadline to negotiate. They threaten to leak stolen client and proprietary information, causing severe reputational and financial damage. Google’s cybersecurity teams warn of targeted data theft campaigns by the UNC3753 threat cluster against US companies. The group uses vishing and social engineering to gain access, exfiltrate sensitive data, and then extort victims with a three-day deadline to negotiate. They threaten to leak stolen client and proprietary information, causing severe reputational and financial damage.