Introduction to Empire

According to the PowerShell Empire website (http://www.powershellempire.com/):

"Empire is a pure PowerShell post-exploitation agent built on cryptologically-secure communications and a flexible architecture. Empire implements the ability to run PowerShell agents without needing powershell.exe, rapidly deployable post-exploitation modules ranging from key loggers to Mimikatz, and adaptable communications to evade network detection, all wrapped up in a usability-focused framework."

It premiered at BSidesLV in 2015.