The Auto-KMS service is a perfect vector for a miner. The toolkit installs a service that looks legitimate (e.g., "OfficeUpdateSvc"), but in reality, it uses your CPU to mine Monero. Because Office runs in the background, you might just notice your laptop fan spinning constantly and your battery draining faster.
Because this emulates a legitimate Microsoft process, Windows itself does not flag the activation as "jailbroken." In the eyes of your operating system, you are simply using a corporate volume license.
: Cleanly removes old Office installations that might be blocking a new setup. How to Use the Toolkit Safely
. Version 2.4.9 was an early stable release specifically tailored for Office 2007, 2010, and 2013 Key Features of Microsoft Toolkit 2.4.9 Dual-Module Activation : Combines two different activation methods: (Key Management Service emulation) and EZ-Activator Offline Support