The poisoning / redirecting was able to be done because the domains were available to be registered. Not sure why that was the case, but they no longer are, so

The poisoning / redirecting was able to be done because the domains were available to be registered. Not sure why that was the case, but they no longer are, so it's no longer an issue. > How can this be mitigated? Or am I over-reacting since I don't fully understand this story? It's been mitigated already.