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Security clearances can be issued by many United States of America government agencies, including the Department of Defense (DoD), the Department of State (DOS), the Department of Homeland Security (DHS), the Department of Energy (DoE), the Department of Justice (DoJ), the National Security Agency (NSA), and the Central Intelligence Agency (CIA).
A United States security clearance is an official determination that an individual may access information classified by the United States Government.Security clearances are hierarchical; each level grants the holder access to information in that level and the levels below it.
After the United States entered into World War II, Britain changed its security classifications to match those of the U.S..Previously, classifications had included the top classification "Most Secret", but it soon became apparent that the United States did not fully understand the UK's classifications, and classified information appeared in the U.S.'s press.
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A Clear kiosk at Hartsfield-Jackson Atlanta International Airport in 2009. A registered traveler is a person qualified through an airline passenger security assessment system in the United States air travel industry.
Other searches such as sex offender registry, credential verification, skills assessment, reference checks, credit reports and Patriot Act searches are becoming increasingly common. [ 23 ] Larger companies are more likely to outsource than their smaller counterparts – the average staff size of the companies who outsource is 3,313 compared to ...
Cryptographic credentials may be self-issued, or issued by a trusted third party; in many cases the only criterion for issuance is unambiguous association of the credential with a specific, real individual or other entity. Cryptographic credentials are often designed to expire after a certain period, although this is not mandatory.