2.5.2. Section 2: Threat Summary. No change from a regular ICD to the threat summary of the IS-ICD; however, the Sponsor should strongly consider the cyber threats posed to an IS solution.

For reference or comparison, below is what the JCIDS Manual says for the ICD 2021 itself:

2.5.3.2. Cite the threat products from the Defense Intelligence All-Source Analysis Enterprise (DIE) used during the development of the capability identified in the ICD.