Cross-Forest Attack
Noun · Security & Infosec
Definitions
An attack that exploits trust relationships, misconfigurations, or credential pathways across separate Active Directory forests. Cross-forest attacks are especially significant in complex enterprise environments with broad identity trust links.
In plain English: An identity attack that moves abuse across separate directory forests that trust each other.
Example: "The red team demonstrated a cross-forest attack by abusing weak trust configuration between the corporate and subsidiary forests."