Volt Typhoon Used Covert Silent Train Network in Four Zero-Day Exploitation Campaigns

Volt Typhoon, a China-linked cyber espionage group, used a covert network called Silent Train to conduct four zero-day exploit campaigns targeting critical infrastructure and enterprise systems. The attacks exploited vulnerabilities in platforms like Versa Director, N-able N-central, and Cisco SD-WAN Controller to gain strategic access and maintain persistence across sectors including telecommunications, government, and energy.