Securing PureLand: A Comprehensive Security Improvement Plan for a Wastewater Treatment Plant

In this document we will discuss about Security Improvement Plan and below are the summary points of this document:- The cyber security issues faced by PureLand, a wastewater treatment plant that uses an industrial control system. The company lacks proper security measures, which makes it vulnerable to attacks from both internal and external sources. The network has several weaknesses, including a lack of proper filtering and detection systems. The document highlights various regulations and guidelines that the company can implement to improve its cyber security measures. The desired future state includes the installation of a router and firewall, a strategic plan, and a demilitarized zone to divide the corporate and control networks. Areas of improvement include network topology, physical security, and the placement of an internal firewall. Overall, the document emphasizes the need for PureLand to take immediate action to improve its cyber security measures to ensure the safety of the company and the environment.

Running head: SECURITY IMPROVEMENT PLAN
SECURITY IMPROVEMENT PLAN
Name of the Student
Name of the Organisation
Author Note

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Table of Contents
Introduction................................................................................................................................2
Current state description............................................................................................................2
Overview of network weaknesses..............................................................................................2
Threats and vulnerabilities facing the ICS.................................................................................3
Understanding of applicable regulations....................................................................................3
Desired future state....................................................................................................................4
Areas of cyber-security needed to be improved.........................................................................4
Conclusion..................................................................................................................................5
References..................................................................................................................................6

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Introduction
PureLand is a treatment plant of waste water which comprises the use of industrial
control system. The company itself finds to be on the wrong side of the law after the
Homeland Security Department finds out that its industrial security department is not
properly protected from the several security threats and vulnerabilities and also a dangerous
chemical is used to treat the water. This study comprises of all the areas of cyber security
which are needed to be addressed are provided by the department of industrial security.
Current state description
Recently, PureLand is seen to have less security and protection of their data,
chemicals and information and this allows attackers to get entry into their industrial control
system who damages the chemicals used for the sterilization of water. This damage caused by
the attackers can be very much hazardous to both the company and its environment. The
company does not provide proper cyber security for that chemical. This lack of security has
opened the doors for the attackers which are becoming prevalent recently.
Overview of network weaknesses
As the network of the company is overviewed, it has been noticed that there are many
weaknesses associated with it. The network consists of one single firewall which is seen to be
in front of the router which makes it ineffective because the packets inside the network are
not filtered properly. Another weakness is the lack of proper system of detection which will
help to check all kinds of suspicious activities going on the network of the company. The
company also lacks protection for all the critical systems like the servers.

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Threats and vulnerabilities facing the ICS
The main threats which are associated with the company includes failures of
equipment, external attackers and dangerous events (Von Solms & Van Niekerk, 2013).
These threats threaten the security of the network to the great extent. These threats are
divided among two groups-internal and external (Jang-Jaccard & Nepal, 2014). Internal
threats are caused by the workers who misuse the resources of the network and External
threats includes viruses, hackers and terrorist groups.
Vulnerabilities associated with the company can be divided into three groups-
Platform, Procedural and Network. Platform vulnerabilities include hardware and software
platforms, configuration and protection of platform malware vulnerabilities (Wang & Lu,
2013). Procedural vulnerabilities include lack of proper rules and policies for industrial
security and lastly the network vulnerabilities are those which are caused by the improper
execution of configurations on the network (Cavelty, 2014).
Understanding of applicable regulations
Several applicable regulations are to undertaken to improve the security within the
company:
 Policies and Procedure guidelines for security mentioned in NIST SP 800-12.
 NIST 800-82 comprises of various recommendations for protection and defence for
the facilities of the network and the company (Piggin, 2013).
 NIST 800-53 provides guidelines for the perimeters of network (Williams, 2016).
 RBPS Metrics 8.2.5 comprises of regulations for password protections.

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 ISO/IEC 27001-27005 comprises of the guidelines for monitoring the system.
 NIST SP 800-91 comprises of the guidelines for the security of defecting devices and
systems.
 NIST SP 800-41 comprises of the guidelines for perfect use of firewall.
Desired future state
PureLand is to put a router and a firewall in between the control and the corporate
network. It is needed to have a proper strategic plan for protecting the industrial control
system and all other systems which connect with this system. The company is to have all the
respective stakeholders of the company responsible for the security of the system and the
network of the company also needs to have a demilitarized zone which create a division
between the corporate and the control network.
Areas of cyber-security needed to be improved
Firstly the network topology is needed to be changed to the star topology because this
star topology will remove the failure which is previously caused due to the ring topology.
Secondly, several measures for the physical security are needed to be taken for the critical
sources within the company. Physical security will involve restrictions in preventing access
to critical systems like servers. Lastly the internal firewall is needed to be placed on the top of
the external firewall which will enforce all the security policies at the network borders.

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Conclusion
PureLand is seen to be facing several cyber security threats which increase the
requirement of taking immediate actions for maintaining cyber security within the company.
The paper has delivered and highlighted properly all the issues and plans showing all the
processes required to make sure about tight proper security measures for the overall network
of the company.

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References
Cavelty, M. D. (2014). Breaking the cyber-security dilemma: Aligning security needs and
removing vulnerabilities. Science and engineering ethics, 20(3), 701-715.
Jang-Jaccard, J., & Nepal, S. (2014). A survey of emerging threats in cybersecurity. Journal
of Computer and System Sciences, 80(5), 973-993.
Piggin, R. S. H. (2013, June). Development of industrial cyber security standards: IEC 62443
for SCADA and Industrial Control System security. In Control and Automation 2013:
Uniting Problems and Solutions, IET Conference on (pp. 1-6). IET.
Von Solms, R., & Van Niekerk, J. (2013). From information security to cyber
security. computers & security, 38, 97-102.
Wang, W., & Lu, Z. (2013). Cyber security in the smart grid: Survey and
challenges. Computer Networks, 57(5), 1344-1371.
Williams, B. L. (2016). Information Security Policy Development for Compliance: ISO/IEC
27001, NIST SP 800-53, HIPAA Standard, PCI DSS V2. 0, and AUP V5. 0. Auerbach
Publications.