Using this specific activator bundle carries severe technical and security implications:
Buying a valid license key from a reputable retailer. MICROSOFT Office PRO Plus 2016 V16.0.4266.1003 RTM Activator
LibreOffice is a completely free, powerful, and open-source office suite. It includes a word processor (Writer), a spreadsheet program (Calc), and a presentation tool (Impress), which are highly compatible with Microsoft Office file formats. Many users find it a full-featured replacement. a spreadsheet program (Calc)
: These tools often require you to disable your antivirus, leaving your PC open to attacks. Malware Risks and a presentation tool (Impress)