eSecurity Planet | Citadel Malware Used to Infiltrate Airport VPN Threatpost (blog) The Citadel Trojan is really starting to become kind of a pain in the neck. Not content to sit by and watch while its more well-known rivals Zeus and SpyEye get all the attention, the Citadel malware has begun showing up in some interesting places ... Airport VPN hacked using Citadel malware Trusteer Uncovers Malware Attack on Airport VPN |