How Secret Is Top Secret?

In anِ era ofِ hacks, leaks, whistle-blowers, andِ media organizations thatِ appearِ to haveِ becomeِ information launderers forِ Russian intelligence agencies, itِ isِ important toِ understand whatِ a state secret reallyِ is.
It isِ equally important toِ recognize thatِ this definition transcends political affiliation.
One’s concern aboutِ classified data shouldِ remain consistent whetherِ thatِ information isِ stored onِ a private server orِ shared withِ anِ adversarial foreign power inِ the confines ofِ the Oval Office.

Confidential: The classification level applied toِ information theِ unauthorized disclosure ofِ which reasonablyِ couldِ beِ expected toِ causeِ damage toِ theِ national security thatِ the original classification authority isِ able toِ identify orِ describe.
This isِ the lowest level ofِ classification.

Secret: The classification level applied toِ information theِ unauthorized disclosure ofِ which reasonablyِ couldِ beِ expected toِ causeِ serious damage toِ national security thatِ the original classification isِ able toِ identify orِ describe.

Top Secret: The classification level applied toِ information theِ unauthorized disclosure ofِ which reasonablyِ couldِ beِ expected toِ causeِ exceptionally grave damage toِ theِ national security thatِ the original classification authority isِ able toِ identify orِ describe.

Codeword/Sensitive Compartmented Information (SCI): An additional layer ofِ classification forِ matters concerningِ intelligence-gathering methods, sources, andِ analysis.
Individuals withِ top-secret clearance areِ granted SCI access onِ a need-to-know basis.

So howِ many people actuallyِ have access toِ theseِ secrets.
Office ofِ the Director ofِ National Intelligence, inِ October 2015 (the mostِ recent year forِ which data isِ available), 2,885,570 people wereِ eligible toِ receive information classified asِ confidential orِ secret.
While theِ majority ofِ the 4,249,053 individuals withِ someِ degree ofِ access toِ state secrets wereِ government employees, overِ 1.2 million wereِ private contractors orِ were classified asِ “other.” Edward Snowden, whoِ revealed inِ 2013 theِ scope ofِ the National Security Agency’s surveillance programs, wasِ oneِ such private contractor.