NISTIR 7298 Revision 1, Glossary of Key Information Security Terms

NIST IR 7298 Revision 1, Glossary of Key Information Security Terms
Information Value – A qualitative measure of the importance of the information based
upon factors such as: level of robustness of the Information
Assurance controls allocated to the protection of information based
upon: mission criticality, the sensitivity (e.g., classification and
compartmentalization) of the information, releasability to other
countries, perishability/longevity of the information (e.g., short life
data versus long life intelligence source data), and potential impact of
loss of confidentiality and integrity and/or availability of the
information.
SOURCE: CNSSI-4009
Ingress Filtering – The process of blocking incoming packets that use obviously false IP
addresses, such as reserved source addresses.
SOURCE: SP 800-61
Inheritance – See Security Control Inheritance.
Initialization Vector (IV) –
A vector used in defining the starting point of an encryption process
within a cryptographic algorithm.
SOURCE: FIPS 140-2
Initialize – Setting the state of a cryptographic logic prior to key generation,
encryption, or other operating mode.
SOURCE: CNSSI-4009
Initiator – The entity that initiates an authentication exchange.
SOURCE: FIPS 196
Inside Threat – An entity with authorized access that has the potential to harm an
information system through destruction, disclosure, modification of
data, and/or denial of service.
SOURCE: SP 800-32
Inside(r) Threat – An entity with authorized access (i.e., within the security domain)
that has the potential to harm an information system or enterprise
through destruction, disclosure, modification of data, and/or denial of
service.
SOURCE: CNSSI-4009
Inspectable Space – Three dimensional space surrounding equipment that processes
classified and/or sensitive information within which TEMPEST
exploitation is not considered practical or where legal authority to
identify and remove a potential TEMPEST exploitation exists.
Synonymous with zone of control.
SOURCE: CNSSI-4009
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