The classified information that Snowden revealed was the extent of data collection that the government is doing to the entire American people. The "enemies" Snowden gave aid and comfort to, are the American people. The reason this is classified information is because the government never wanted the people to know what was being done to them. They might object to having such massive data collection by a government driven insane by paranoia. If the public knew, they might not want their money spent on something like Dark Star. Edward Snowden told, he exposed not only the kind of spying the government is doing, but what it intends to do with programs like Dark Star.
Behold the NSA?s Dark Star: the Utah Data Center - The Daily Beast
Down State News - Behold the NSAÂ’s Dark Star: the Utah Data Center
ItÂ’s the ultimate machine of whatÂ’s become our Paranoid State. Clive Irving on the Orwellian mass-surveillance data center rising in the Utah desert.
ThereÂ’s no official explanation of the Utah Data CenterÂ’s real mission, except that itÂ’s the largest of a network of data farms including sites in Colorado, Georgia, and Maryland. But itÂ’s obviously been built to vastly increase the agencyÂ’s capacity to suck in, digest, analyze, and store whatever the intelligence community decides to collect.