What are the six CUI categories?
The six category of CUI are as follows:
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Individually Identifying Information (PII)
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Precisely Identifiable Personal Information (SPII)
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EPA currently refers to proprietary business information (PBI) as confidential business information (CBI)
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Controlled Technical Information That Is Not Classified (UCTI)
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Unclassified but Sensitive (SBU)




