I have noticed this issue on BigSur that did not happen on Catalina: An app is attempting to establish a network connection, despite the following entitlements: <key>com.apple.security.app-sandbox</key> <true/> <key>com.apple.security.network.client</key> <false/> An outbound firewall is preventing it, but my understanding is that these entitlements should prevent entirely the app from making connections. Has this changed under BigSur?