Security/Manager/DefaultSecurityManager.php
public function isSecurityEnabledFor($attribute)
    {
        if (SecurityManagerInterface::RESOLVE_FIELD_ATTRIBUTE == $attribute) {
            return $this->fieldSecurityEnabled;
        } else if (SecurityManagerInterface::RESOLVE_ROOT_OPERATION_ATTRIBUTE == $attribute) {
            return $this->rootOperationSecurityEnabled;
        }

        return false;
    }
public function isSecurityEnabledFor($attribute)
    {
        if (SecurityManagerInterface::RESOLVE_FIELD_ATTRIBUTE == $attribute) {
            return $this->fieldSecurityEnabled;
        } else if (SecurityManagerInterface::RESOLVE_ROOT_OPERATION_ATTRIBUTE == $attribute) {
            return $this->rootOperationSecurityEnabled;
        }

        return false;
    }
@param string $attribute

@return bool