The tactical appeal of Rainbow Six Siege makes it an attractive diversion during school downtime, but the technical trade-offs of unblocked mirror sites are inherently stacked against the user. Browsing environments cannot replicate bare-metal hardware execution, and they cannot interface with low-level anti-cheat infrastructure.
Treating third-party proxy mirrors as genuine software hubs exposes personal data to persistent harvesting operations. When an online portal promises to deliver a high-end desktop title through an unauthenticated browser tab, it is not serving a game. It is running an exploit. Respect network policies, reserve high-stakes competitive matches for secure personal hardware or authorized cloud providers, and keep gaming credentials out of reach of automated credential-stripping scripts.