Grumpy Old Geeks Products Shlack Product Shlack 2 mentions in 1 episode A tool described as adding end-to-end encryption to Slack direct messages. Mentions 258: Divestment Of Responsibility May 7, 2018 1:24:56 There's a new tool for Slack called Shlack. 1:25:23 Tools like Shlack are an unfortunate necessity for users communicating over Slack.