Online videos are the best thing since sliced bread, no doubt. Paid content of that kind hosted by reputable platforms is typically safe to watch, but users could be at risk when opting for services that don’t require registration. There has to be a monetization element either way. Some providers live off ads, as is the case with the 123movies.domains. If a Mac user allows notifications when on that resource, their computer routine will be interrupted by noxious sponsored information.