> But Keybase teamwork is end-to-end encrypted, which means you don't have to worry about server hacks. Alternatively, you can lie awake at night...fearing a breach of your company's messaging history. What if your team's history got stolen from Slack and leaked or published? The legal and emotional nightmare.

I don't know why but I'm really put off by the negative marketing. Using Slack has obvious drawbacks from data security perspective but is using a closed source, hosted software like Keybase correct solution?