+Classified information is data withheld from public access by a government or organization. Its disclosure could harm national security or other interests, leading to systems of [Security Clearances](/wiki/security_clearances) and [Information Secrecy](/wiki/information_secrecy).
+## See also
+- [National Security](/wiki/national_security)
+- [State Secrets](/wiki/state_secrets)
+- [Top Secret](/wiki/top_secret)
... 1 more lines