How about cross posting / leaking messages across random organizations? We use Slack, but have to use Teams with one partner only for video. One day I found a

How about cross posting / leaking messages across random organizations? We use Slack, but have to use Teams with one partner only for video. One day I found a message that that was weird (in the sense that it was from nobody within the organization) also marked as "(no title)". When I clicked on it gave an error "We weren't able to access your conversation". Here's the screenshot https://imgur.com/a/C2IKK2b https://imgur.com/a/C2IKK2b