But their reasoning isn’t quite the same as the Australian military. They’re putting the blame not on WeChat itself -- but the people using it.

As an example, the Communist Youth League referred to an incident where a newsroom staffer wanted to send a classified government document to his editor on WeChat. But he accidentally tapped on the wrong group and sent it there instead -- so he was fired, and his editor suspended.

Another example involved a leak, where someone forwarded pictures of apparently sensitive documents from a work group into multiple other groups (and even Weibo).

“The leaks happened because people hope they get lucky and and decide to ignore the law,” says the League. They also refer to one article in China’s state secrets law that says it’s illegal to pass around national secrets using “unprotected communication methods”.

That anyone would even think to swap sensitive documents on WeChat shows just how far it’s penetrated into every part of people’s lives. 

Studies have suggested 90% of Chinese professionals use WeChat for work communication. Connecting on WeChat by scanning QR codes is often preferred to exchanging name cards. And people are expected to work at all times -- because everyone is always on WeChat, so you can answer a work message at any time.