According to the Resident Evil 3 listing on Steam, Capcom has brought Denuvo anti-tamper as their DRM (Digital Rights Management) tool.
Denuvo was also the DRM for Resident Evil 7 and the Resident Evil 2 remake. However, it was removed from both games because of complaints that the software was too taxing for less powerful PCs.
Whether or not Denuvo will be removed from Resident Evil 3 is still to be determined. It was on 7 for almost two years of its lifecycle and for almost all of 2‘s first year. It would be my guess that it’ll eventually be removed, but I guess we’ll see what Capcom has in store to combat piracy as time goes on.