Threat actor
Calypso
Tracked by CyberSIXT since May 21, 2026 · last activity May 21, 2026
Coverage timeline
-
Chinese Calypso APT Uses Showboat Linux Backdoor on Telecomswww.darkreading.com · May 21, 2026
Tracked by CyberSIXT since May 21, 2026 · last activity May 21, 2026