Treat this like: > I was able to hack/gain control over the majority of the servers that serve up authoritative information about who owns what records on the

Treat this like: > I was able to hack/gain control over the majority of the servers that serve up authoritative information about who owns what records on the .IO ccTLD. A "poisoning" if DNS is serving up untrue information via DNS records. This could point your bank site to a phishing site, or it could just point your bank site to a blackhole (or just point it at Google.com or something).