Edward Snowden interrupted at FutureFest conference in London - Business Insider

 A case study on the importance of effectively using Hangout privacy settings

"Google Hangouts allow multiple people take part in online video calls. Snowden was in the video call using a Google profile under the name of "Ben," but whoever set up the call hadn't locked down the privacy settings. That meant that anyone could join — and they did.

First up was a man sitting on his bed, who started laughing when he realised that he was on a video call with Edward Snowden. It looked like he was chatting to someone on the phone, too. Snowden joked about the unexpected visitor, remarking "I see a guy in his bed.""

Edward Snowden interrupted at FutureFest conference in London - Business Insider