I couldn't understand why the ex-Amazon cloud lead was also in charge of Slack. When he made all channels private and put a Slackbot in every channel to monitor conversations, I knew it was all over. I'm worried his Slackbot logs are part of the leak. Guy had his hands in everything :(
Same guy who took over GitHub and forced everyone into his self hosted source control because he couldn't trust Github. That decision didn't pay off.