Governance

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Senior Agency Information Security Officer (saiso)

Primary definition

Official responsible for carrying out the chief information officer (CIO) responsibilities under the Federal Information Security Management Act (FISMA) and serving as the CIO's primary liaison to the agency's authorizing officials, information system owners, and information systems security officers. Note: Also known as senior information security officer (SISO) or chief information security officer (CISO). Source: FIPS PUB 200 (adapted from 44 U.S.C. Sec. 3544)

Also known asSISO · CISO · senior information security officer
2 sources cited4 related termsReviewed Aug 10, 2026
Committee on National Security Systems Glossary CNSSI 4009-2015View source

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CNSSGC

Official responsible for carrying out the chief information officer (CIO) responsibilities under the Federal Information Security Management Act (FISMA) and serving as the CIO's primary liaison to the agency's authorizing officials, information system owners, and information systems security officers. Note: Also known as senior information security officer (SISO) or chief information security officer (CISO). Source: FIPS PUB 200 (adapted from 44 U.S.C. Sec. 3544)

Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024

Cite this term

Permanent URL · stable across revisions
Election Security Glossary. (2026). Senior Agency Information Security Officer (saiso). In Election Security Glossary. Retrieved August 20, 2026, from https://electionsecurityglossary.com/glossary/senior-agency-information-security-officer-saiso

Sources

2 cited · last checked Aug 10, 2026

01

Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015

High consensus

View source

02

The Cyber Glossary
The Cyber Glossary

Multi-source

View source

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