What is considered "secret" and "open-source" may only be certain aspects of the object in question. In this case perhaps only a few details are considered sensitive and thus there isn't a need to censor the existence of the darned thing. Or maybe he drew this in case he missed blurring out a few details.He wouldn't be sending any drawings if he didn't want any tea. I'd have imagined that any sensitive leak that makes it so far must be government supported or initiated. Oh we'll let him off again this time since the drawing looks like one made by a 2 year old who is still developing their coordination? Yeah right.