When you see a file or torrent labeled "Solidsquad-ssq Mastercam," it refers to a pirated version of the software where the licensing protection (Hasp/Sentinel LDK) has been bypassed or emulated to allow the software to run without a legitimate purchase.
Using "SolidSquad" versions of professional software like Mastercam carries significant risks: Solidsquad-ssq Mastercam