An administrator creating an exclusion is limited to applying a rule to how many groups of hosts?

The CrowdStrike Falcon platform is designed for granular control over security policies. Each exclusion rule, whether for Machine Learning (ML), Behavioral (IOA), or other detection types, must be assigned to a single host group. This one-to-one relationship ensures that exceptions are applied precisely and intentionally, preventing overly broad exclusions that could create security gaps. To apply the same exclusion to different sets of hosts, an administrator must create a separate, identical exclusion for each required host group. This maintains a clear audit trail and enforces a principle of least privilege for security exceptions.

A. Exclusions are fundamentally aligned with host groups to ensure they are applied only to the intended systems and not globally.
B. The platform does not have a multi-group limit of three; the limitation is strictly one group per exclusion.
C. An exclusion cannot be applied to multiple or "all" groups in a single rule; it requires a distinct rule for each group.

1. CrowdStrike, Inc. (2023). Falcon Platform User Guide. "Exclusions" section. This official documentation specifies that when creating any exclusion (e.g., ML, IOA), the administrator is prompted to select a single host group to which the rule will apply. The interface does not permit the selection of multiple groups for a single exclusion entry.

2. CrowdStrike, Inc. (2023). CCFA-200b CrowdStrike Certified Falcon Administrator Courseware. Module: "Falcon Prevention and Policies". The course material explicitly details the process of creating exclusions, demonstrating that each exclusion is tied to one host group to ensure precise policy application.