Dassault Systèmes is aggressive. While they rarely sue individual hobbyists, they regularly send cease-and-desist letters to companies using cracked software. If you use Solidworks 2016 commercially with a SolidSquad activator, you risk:
If you need SolidWorks 2016 legitimately, contact a certified SolidWorks reseller or consider a current version through a (as older versions like 2016 are no longer sold directly by Dassault Systèmes). Solidsquad Solidworks 2016