The European "responsible vulnerability disclosure" specialists Swascan claim to have discovered that the popular virtual conference service GoToMeeting may be subject to various common weakness enumerations (or CWEs). They may affect the ability to set up meetings with the privacy normally expected of these online events.
https://www.notebookcheck.net/GoToMeeting-found-to-be-potentially-susceptible-to-hacking.442684.0.html