If you cannot find a license for older Office versions, consider LibreOffice or Apple's iWork suite (Pages, Numbers, Keynote), which are often free and compatible with older Mac systems.
Cybercriminals use these downloads to install a variety of malicious programs on your Mac, including:
Only download original, untouched .pkg files. Check the file hash if possible to ensure it matches Microsoft's original release.
: This is the last fully compatible version for El Capitan.
