    public void authorizeRequest(Operation op) {

        String suffix = UriUtils.buildUriPath(UriUtils.URI_PATH_CHAR, UriUtils.getLastPathSegment(op.getUri()));

        // allow access to ui endpoint
        if (ServiceHost.SERVICE_URI_SUFFIX_UI.equals(suffix)) {
            op.complete();
            return;
        }

        ServiceDocument doc = new ServiceDocument();
        if (this.parent.getOptions().contains(ServiceOption.FACTORY_ITEM)) {
            doc.documentSelfLink = UriUtils.buildUriPath(UriUtils.getParentPath(this.parent.getSelfLink()), suffix);
        } else {
            doc.documentSelfLink = UriUtils.buildUriPath(this.parent.getSelfLink(), suffix);
        }

        doc.documentKind = Utils.buildKind(this.parent.getStateType());
        if (getHost().isAuthorized(this.parent, doc, op)) {
            op.complete();
            return;
        }

        op.fail(Operation.STATUS_CODE_FORBIDDEN);
    }
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.