UPDATE (2/16/18): We have corrected this post to more accurately reflect the limits of Slack's encryption of user data at rest. We have also clarified that granular retention settings are only available on paid Slack workspaces.

The revolution will not be televised, but it may be hosted on Slack. Community groups, activists, and workers in the United States are increasingly gravitating toward the popular collaboration tool to communicate and coordinate efforts. But many...

In yet another milestone on the path to encrypting the web, Let’s Encrypt has now issued over 50 million active certificates. Depending on your definition of “website,” this suggests that Let’s Encrypt is protecting between about 23 million and 66 million websites with HTTPS (more on that below). Whatever the number, it’s growing every day as more and more webmasters and hosting providers use Let’s Encrypt to provide HTTPS on their websites by default.

Perhaps you’re an office manager tasked with setting up a new email system for your nonprofit, or maybe you’re a legal secretary for a small firm and you’ve been asked to choose an app for scanning sensitive documents: you might be wondering how you can even begin to assess a tool as “safe enough to use.” This post will help you think about how to approach the problem and select the right vendor.

As every organization has unique circumstances and needs, we can’t provide definitive...