Latest revision as of 00:24, 20 January 2026

Interconnection security agreement (ISA)

A document that regulates security-relevant aspects of an intended connection between an agency and an external system. It regulates the security interface between any two systems operating under two different distinct authorities. It includes a variety of descriptive, technical, procedural, and planning information. It is usually preceded by a formal MOA/MOU that defines high- level roles and responsibilities in management of a cross-domain connection.

Source: CNSSI 4009-2015 | Category:

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