Firewalls generally do not provide protection from insider threats. While a firewall may be designed to prevent outsiders from obtaining sensitive data, the firewall does not prevent an insider from copying the data onto a tape and taking it out of the facility. Thus, it is faulty to assume that the existence of a firewall provides protection from insider attacks or attacks in general that do not need to use the firewall. It is perhaps unwise to invest significant resources in a firewall if other avenues for stealing data or attacking systems are neglected.