The call was held via Webex videoconferencing software, hosted on German army servers, but "not all participants adhered to the secure dial-in procedure as required," Pistorius said.
In principle, the systems used by the German military are secure, but one participant dialed in from Singapore using an insecure line, according to Pistorius.
Ugh. So how long have random people been joining secure meetings from random insecure places abroad?