NetKnights GmbH is an independent IT security company which offers services and products for strong authentication (two factor authentication), identity management and encryption. NetKnights staffs the core developers of the open source authentication system privacyIDEA. The privacyIDEA Enterprise Edition is a flexible, modular authentication system that can manage vendor independent OTP tokens, Yubikeys, OTP cards, smartphones, SSH keys, X.509 certificates an much more.