To make sure its competitors aren’t able to look behind its tightly drawn curtains, Microsoft has a list of online services that it forbids its workforce to use, according to a report from GeekWire. They’re familiar names for most modern professionals: Slack, Google Docs, and Amazon Web Services (among others). Despite the popularity of some of these services that allow for easy communication between employees and data storing and sharing, Microsoft wants to make sure everybody is keeping all their information in-house with its own programs. Actually, not even all of its own programs are safe, as the Microsoft-owned GitHub is also off limits.