A system and method includes: ingesting the computing resource ingestion group at a remote access control service by generating a replica computing resource ingestion group, wherein ingesting the computing resource ingestion group includes replicating each of the plurality of computing resources of the computer network to a remote storage of the remote access control service; applying different permissioning indicia to disparate subsets of the plurality of computing resources of the replica computing resource ingestion group; generating permissioning nexus between each of the one or more accessor groups and the disparate subsets of the plurality of computing resources of the replica computing resource ingestion group, wherein generating the one or more permissioning nexus includes applying one of the different permissioning indicia to each of the one or more accessor groups; disabling access to the computing resource ingestion group at the computer network based on generating the permissioning nexus.