From Washinton Post:
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The Wall Street Journal reported Friday that the list of items seized by FBI agents during the search included 11 sets of classified documents; four were marked top-secret, three were secret and three were identified as confidential the lowest level of classified information. The Journal reported the inventory of what was taken also referred to a set of documents marked Various classified/TS/SCI documents, a government label for a more closely held form of top secret information.
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And from
veteran.com:
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The U.S. Department of Commerce official site reminds, Sensitive Compartmented Information (SCI) is information about certain intelligence sources and methods. SCI may involve details or other data about sensitive collection systems, analytical processing, and targeting, or which is derived from it.
Access to TS/SCI information is permitted on a need-to-know basis for those who have been awarded the appropriate security clearance level. For example, those with a need to know AND a Top Secret clearance may be authorized to view TS/SCI rated material, but someone with only a Secret or Confidential clearance would not.
There are instances of Secret-level classified SCI, those with the appropriate clearance would be authorized to view such material but those without approved clearance levels would be required to obtain them prior to being given access to SCI.
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TS/SCI Access is always determined by the need to know. Those who hold high clearances (such as Top Secret) are not automatically authorized to handle or view SCI, they must be granted access first.
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