Virtually every company today uses firewalls to enforce perimeter
security. However, this security model is problematic because, when
that perimeter is breached, an attacker has relatively easy access to a
company’s privileged intranet. As companies adopt mobile and cloud technologies,
the perimeter is becoming increasingly difficult to enforce. Google
is taking a different approach to network security. We are removing the
requirement for a privileged intranet and moving our corporate applications
to the Internet.