According to one embodiment, an apparatus may receive a resource token associated with a resource indicating that access to the resource has been requested. The apparatus may determine at least one token-based rule based at least in part upon the resource token, wherein the at least one token-based rule may be associated with at least one subject token. The apparatus may then determine that the at least one subject token is not in the plurality of first subject tokens and the plurality of second subject tokens based at least in part upon the at least one token-based rule, and deny access to the resource.