By far the most common risk is malware. The criminal groups that host these "patched" files embed malicious code directly into the installer or the crack. This means that at the moment you click "Run as Administrator" to install your "free" Office, you are also granting full, silent permission for your computer to become infected.
These official updates can be downloaded from trusted Microsoft sources and installed on a legitimate copy of Office 2016. They do not activate the software or bypass licensing requirements—they simply keep an already-licensed installation up to date. index of ms office 2016 64 bit patched
Downloading Office from an open directory ("index of") or third-party source exposes your system to several threats: Embedded Malware By far the most common risk is malware