Mac Error Confusion

Last month I was in Vancouver for a round of taping of the Lab with Leo Laporte TV show when this somewhat odd error window pop’s up on my screen.
“The wireless network appears to have been compromised and will be disabled for about a minute.”
I have never in my years seen this one, even had everyone on set stumped. Any ideas? I’d like to know if this has popped up on anyone else’s screen.
