Clients/visitors of public and private defdev [and also secmachine] trainings were/are: LogMeIn/LastPass/GoToMeeting/Boldchat, Ustream, ING Belgium/Netherlands, JKU Institute für Netzwerke und Sicherheit, Siemens/evosoft, Nokia, GE Healthcare, Opera Software, SAP, Balabit/One Identity, AEGON, KBC/KH Hungary, Ocado, Vijfhart.