FYI, from the announcement. Probably the most important part at the end, italicized by me. Also note (elsewhere) that licenses are MIT and Apache2:
.NET Core Tools Telemetry
The .NET Core tools include a telemetry feature so that we can collect usage information about the .NET Core Tools. It’s important that we understand how the tools are being used so that we can improve them. Part of the reason the tools are in Preview is that we don’t have enough information on the way that they will be used. The telemetry is only in the tools and does not affect your app.
Behavior
The telemetry feature is on by default. The data collected is anonymous in nature and will be published in an aggregated form for use by both Microsoft and community engineers under a Creative Commons license.
You can opt-out of the telemetry feature by setting an environment variable DOTNET_CLI_TELEMETRY_OPTOUT (e.g. export on OS X/Linux, set on Windows) to true (e.g. “true”, 1). Doing this will stop the collection process from running.
Data Points
The feature collects the following pieces of data:
The command being used (e.g. “build”, “restore”)
The ExitCode of the command
For test projects, the test runner being used
The timestamp of invocation
The framework used
Whether runtime IDs are present in the “runtimes” node
The CLI version being used
The feature will not collect any personal data, such as usernames or emails. It will not scan your code and not extract any project-level data that can be considered sensitive, such as name, repo or author (if you set those in your project.json). We want to know how the tools are used, not what you are using the tools to build. If you find sensitive data being collected, that’s a bug. Please file an issue and it will be fixed.
.NET Core Tools Telemetry
The .NET Core tools include a telemetry feature so that we can collect usage information about the .NET Core Tools. It’s important that we understand how the tools are being used so that we can improve them. Part of the reason the tools are in Preview is that we don’t have enough information on the way that they will be used. The telemetry is only in the tools and does not affect your app.
Behavior
The telemetry feature is on by default. The data collected is anonymous in nature and will be published in an aggregated form for use by both Microsoft and community engineers under a Creative Commons license.
You can opt-out of the telemetry feature by setting an environment variable DOTNET_CLI_TELEMETRY_OPTOUT (e.g. export on OS X/Linux, set on Windows) to true (e.g. “true”, 1). Doing this will stop the collection process from running.
Data Points
The feature collects the following pieces of data:
The command being used (e.g. “build”, “restore”)
The ExitCode of the command
For test projects, the test runner being used
The timestamp of invocation
The framework used
Whether runtime IDs are present in the “runtimes” node
The CLI version being used
The feature will not collect any personal data, such as usernames or emails. It will not scan your code and not extract any project-level data that can be considered sensitive, such as name, repo or author (if you set those in your project.json). We want to know how the tools are used, not what you are using the tools to build. If you find sensitive data being collected, that’s a bug. Please file an issue and it will be fixed.