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Customers and outsourcing suppliers who engaged in the
outsourcing boom three to five years ago are now facing significant security
challenges. Particularly, the last 18 months have seen a shift in the perception
of the security issues that face networking infrastructures. For the first time,
networking products have made it to the SANS Top 0 vulnerability list, with
Cisco's IOS getting specific attention. In the past, there was very little
attention paid to the possibility of security vulnerabilities in network
infrastructure equipment being exploited. The demonstration given at BlackHat
symposium in 005 has also contributed to the new perception of network
infrastructure as being subject to security issues previously only dealt with in
relation to servers and desktop computing resources. The research firm Gartner
recommends that enterprises that run Cisco IOS pay close attention to IOS
vulnerabilities, treat them seriously, and follow the guidelines within
advisories to upgrade to a newer version of software at the earliest possible
opportunity.
In the event of buffer/heap/stack overflow vulnerability
exploitation, Gartner recommends that enterprises take immediate action to
shield their network by implementing a layered defense, including network-based
intrusion prevention technologies, to block exploits while executing normal
test-and-patch deployment processes. The sheer amount of Cisco equipment
installed, the many versions of IOS involved, the difficulties of upgrading IOS
and the IOS vulnerabilities already out there or yet to be discovered present a
major challenge to network administrators and security professionals. This is an
aspect that needs to be reflected in outsource contracts, or if handled
in-house, the amount of effort required should be recognized and planned for.
 Security Shift
All these developments resulted in widespread realization that traditional
firewall and antivirus technologies, as covered in original outsourcing
contracts, were not able to withstand emerging threats such as self-replicating
worms, port 5 (mail), port 80 (Web), PP exploits and spyware, amongst others.
And to compound the external threat, internal IT assets that were infected were
infecting other internal assets.
A detection and response strategy within the perimeter was now
required to supplement the ailing protection strategy. Many enterprises were
also not aware that their insurance policies did not provide cover against
malicious code attacks. Other companies who tried to buy coverage found there
were few policies being written that protected against digital attacks.
The security industry experienced a very busy year in 2004.
There was much piloting and testing of IPS and other appliances to solve
specific problems. During this exploratory phase, a key issue for outsourcers
and their customers was the question of who was going to take responsibility for
paying for the implementation of the technology once they were satisfied with
the tests/results.
The biggest error made by organizations and outsourcers was that
they thought that deploying this technology would solve their issues. What they
did not realize was that they were only solving particular issues, in much the
same way as they had done when they invested in firewalls, VPNs and antivirus
software. While IPS appliances, application firewalls, host-IPS, desktop
firewalls and IDS were being installed, no one considered the fact that security
needed to be a holistic process involving people, process and technology.
Outsourcing contracts were modified to include the provision and
management of additional security hardware at strategic points within the
network. These measures repeated the mistakes of the past. They catered for
short-term challenges, but did not make provision for long-term issues.
| Outsourcing
contracts were modified to include the provision and management of
additional security hardware. They catered for short-term challenges, but
did not make provision for long-term issues |
Outsourcing Security
In response to growing concerns about security and the ever increasing
complexity of the management of these newly installed point devices, many
companies turned to the same companies who managed their existing network
infrastructure, or to the emerging band of managed security service providers.
This seemed the logical response for any company seeking to offload the
complexities of security management and to alleviate the need for highly-priced
technical talent.
The problem was that most of the contracts contained clauses in
the fine print absolving the service provider of liability and accountability
for security incidents. Many such contracts promised little more than
notification of events, which could not be confirmed as false positives. This
level of service put the onus on the customer to respond to and resolve the
incidents reported. In many cases, this caused extreme distress to unprepared
clients in their hour of need, especially when these same service providers were
able to assist in the incident response for additional hourly fees.
Outsourcing security has been a hot topic of debate for some
time. There is a strong argument for both sides and no sign of consensus on the
horizon. The facts are simple, yet overwhelming for many and include the
following:
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Addressing security and IT risk is not optional.
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Legislation and liability are driving security to the top of
CIOs' priority lists.
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There is a real awareness of the problem in bridging the gap
between business people and the technologists.
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Technology is ever changing; therefore security is a moving
target.
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Good security resources are difficult to find, and costly to
hire and retain.
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Outsourcing security does not transfer accountability or
liability to the service provider.
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