Exactly. Saying “leaked” attempts to make the informants into victims.
In China, in every apartment building and in every block, there’s always at least one person who is the local Communist informant, ready to fink out anyone who does anything of which the government might not approve.
Nazi Germany had the same thing. My spelling is bad but what they were called were glieters. They put in their reports and then a local gestapo guy showed up with the famous: ver are your papers??