Skip to content
SynAc
Term

add-on security

Incorporation of new or additional hardware, software, or firmware safeguards in an operational information system.

Senses

Sense 1

Incorporation of new or additional hardware, software, or firmware safeguards in an operational information system.

References
  • NIST CSRC GlossaryJan 05, 2026
    add-on security
    https://csrc.nist.gov/glossary/term/add_on_security
    NIST states most site information is public information and may be distributed or copied, except material marked as copyrighted; attribution requested. Verify per-document markings before quoting.
    Source: NIST CSRC Glossary (csrc.nist.gov).
(N)

The retrofitting of protection mechanisms, implemented by hardware or software, in an information system after the system has become operational. [FP039] (Compare: baked-in security.)

References
  • IETF RFC 4949 (Internet Security Glossary)Jan 06, 2026
    RFC 4949 — Internet Security Glossary (Version 2)
    https://www.rfc-editor.org/rfc/rfc4949.txt
    RFC 4949 is published by the IETF Trust and marked as "Distribution of this memo is unlimited". Verify IETF Trust copyright/licensing terms for reuse.
    Source: IETF RFC 4949 (rfc-editor.org).