Cyber Service Providers DuckDNS: Free Dynamic DNS Service Provider June 25, 2026 ♡Follow0 DuckDNS offers free dynamic DNS services, which were exploited by the attacker for C2 communication. Discovered from: Junior Hacker Used Tailscale and OpenSSH to Maintain Persistent Access After C2 Outage C2DuckDNSdynamic DNSfree service