|
Search
IBIMA Publishing library
Open
Accesss to full-text
Articles
|
powered by

|
|
Communications of the IBIMA
Volume 2010
(2010), Article ID 486878,
Communications of the IBIMA, 9 pages.
Information
Systems Security Measures and Countermeasures: Protecting
Organizational Assets from Malicious Attacks
Abdullah
Alshboul,
Argosy University, Chicago, USA
Copyright ©
2010
Abdullah Alshboul.
This is an
open access article distributed under the
Creative
Commons Attribution License unported 3.0, which permits unrestricted
use, distribution, and reproduction in any medium, provided that
original work is properly cited.
Abstract
Determining
the exact requirements for
security for a given organization is essential for implementing the
proper security measures. Such measures are designed to protect
information systems from security breaches. The Internet and
computer networking requires a new security measures and policies to
reduce the threats and challenges inherent from these new technologies
and software applications and network devices. The information security
attacks of an organization’s assets have high dollar impact, loss of
customer confidence, and negative business reputation. An organization
must analyze its assets and the threats these assets face from either
inside attacks or outside attacks. This paper presents a security
assessment method which is designed to enable the organization to
reduce security threats by deploying the most proper security measures,
countermeasures, and policies.
Keywords: security
measures,
countermeasures, malicious attacks.
Introduction
The
Internet and
computer networking means that there is a need for new security
measures and policies to reduce the threats and challenges inherent
from these new technologies and software applications and network
devices. Information, network equipments, transmission media, computer
systems, and servers are subject to threats. “Yet the use of
information and communication technologies has increased the incidents
of computer abuse.” (Backhouse and Dhillon). Security measures and
countermeasures are implanted to protect organizations from different
security attacks. To guarantee the security requirements of a given
organization, it is essential to be able to evaluate the current
security demands of an organization as well as the measures taken to
achieve such requirements. Security weaknesses cause a negative impact
on organizations such as financial loss, reputations, and loss of
customer confidence (Kumar, Park, and Subramaniam, 2008). The intention
of implementing security measures, controls, and policies is to guard
information security objectives and information assets. Information
security objectives, which are confidentiality, integrity, and
availability, are the main concern in categorizing information security
level (Chen , Shaw and Yang, 2006, Johnson, 2008 and.
Nyanchama, 2005).
Information
security
breaches take many forms and could carry disturbing and devastating
consequences on both the economy and national security. The Department
for Business Enterprise & Regulatory Reform (BERR) in the
United
Kingdom conducted a survey in 2008 which indicated that the estimated
financial losses due to the security breach were several billion pounds
a year (Chen, Shaw, and Yang). Richardson found in the annual CSI
conducted by FBI that the average financial loss due to the security
breach per respondent was $288,618, however; only 144 respondents from
522 were willing to share their financial losses. Security- related
losses cost the U.S economy some U.S $117.5 Billion a year (Powner). An
organization which could experience a loss of personal information due
to the breach of confidentiality, integrity or availability would be
categorized as a low, moderate, or high
security level.
Table 1 illustrates a template example for a high security level of a
given organization. Measuring the level of personal, physical and
network security will assist organizations in determining the average
security level that needs to be implemented in an organization.
The
security measures
and countermeasures are used in organizations to protect information
security objectives. These measures will assist an evaluator to measure
the security level. For example the security level is high when an
organization implements the most proper, updated measures, policies,
and countermeasures to protect its security objectives. The information
security level is low when an organization implements up to 49% of the
measures and countermeasures to protect its security objectives. The
security moderate is high when an organization implements between 50%
and up to 79% of the measures and countermeasures to protect its
security objectives as shown in table 1.
Table 1:
Information
Security Level Assessment
|
Measuring
level
|
Low
|
Moderate
|
High
|
|
Personal
security
|
0-49
|
50-79
|
80-100
|
|
Network
Security
|
0-49
|
50-79
|
80-100
|
|
Physical
security
|
0-49
|
50-79
|
80-100
|
|
Assessment/
Average
|
The
average is low
|
The
average is
moderate
|
The
average is high
|
This tool allows for multiple classifications of an organization. For
example, an organization with an average score of 40%, 60%, and 90% for
security measures that protects confidentiality, integrity, and
availability will be categorized as low, moderate and high on
confidentiality, integrity, and availability accounts.
Organizations are required to take appropriate security measures based
on their requirements. Security measures can be grouped into three
major groups: physical, personal, and network security measures. Each
group employs several means for security protection. Within
each
group, security measures can be further classified into measures aimed
at securing the confidentiality, integrity and availability of the data
and system. Banks, on the other hand, have high demand for
data
confidentiality. Hence, the measures required to protect
confidentiality are essential for banks. In essence, an organization
may have different security requirements for information security
objectives. Similarly, an organization may have different security
requirements at different times.
Information
Security Threat and
Vulnerability
Vulnerability
is the weakness of information and information systems which can lead
to attacks, harm, modification, destruction, disclosure, interruption,
and interception.
- Destruction:
occurs when information, hardware, and software are destroyed due to
malicious intention.
- Disclosure:
occurs when unauthorized users have access to information or
information systems and disclose the confidential information.
“Unauthorized disclosure has a serious impact on maintaining security
and privacy of the system” (Dhillon).
- Modification:
occurs when unauthorized users change the information held in computer
and server systems.
- Interruption:
occurs when a computer network becomes unavailable for access. An
example is the denial of service.
- Interception:
occurs when unauthorized users copy information that resides in a
computer system or while the data is in transmission mode.
An attack on information systems is a sign of
vulnerability. “Vulnerability assessment deals with identifying flaws
and weaknesses that could possibly be exploited of the threats”
(Dhillon).Vulnerabilities lead to hackers, attackers, and spies who
attack the information and information systems. “Threats take advantage
of vulnerabilities to cause damage or loss” (Nyanchama, 2005).The
weaknesses of information systems are the roots of the breaches in
information security which can lead to financial fraud, damage to
brand-names, and brand-marks, loss of customer and partner confidence,
and could also cause the organization to go out of business.
New threats to information systems occur from
unexpected sources when organizations become more reliant on it
(Nyanchama, 2005). “Threat is an indication of impending danger or
harm” (Johnson, 2008). “A security threat is a condition of
vulnerability that may lead to an information security being
compromised.” (Kumar, Park, and Subramaniam, 2008).
All organizations having information systems, websites, intranet, and
Internet are subject to a number of security threats. Organizations are
facing an increase of varieties of security threats. As risk level
grows and the need for organizational compliance in this field
increases, information systems security becomes more important to an
organization’s overall business approach.
Internet is considered the major threat to
organizations because criminals can access valuable information. Many
threats are caused by operating System (OS) weaknesses, network
operating system (NOS) weaknesses, and default configuration of the OS
and NOS, network devices and firewalls, encryption weaknesses, and
applications that are poorly written (Ciampa). As the sophistication of
security threats continues to evolve, organizations must take steps
toward preventing the losses from these threats (John, 2000).Removing
threat and eliminating vulnerability is impossible as long as the
organizations are connected to the Internet and hackers are breathing
(Nyanchama, 2005).. However, it is doable to ease the risk and live
with both inside and outside threats (Nyanchama, 2005). A threat is not
a risk when vulnerability does not exist. Yet, if there is any
possibility of a threat or the root of a threat, weaknesses and
vulnerability must be determined and the appropriate measures and
controls need to be implemented.
Mitigating vulnerability by deploying measures to
reduce security breaches, monitoring news about the new
vulnerabilities, developing new risk assessment, deploying new
technologies, and employee training can mitigate new threats and
protect an organizational asset. The importance of understanding the
impact of an organization’s security threats is facilitating an
organization more efficiently to measure the security risk. The nature
of threats to information security has changed due to the hackers and
crackers sophistication. Organizations must investigate the information
systems vulnerability.
This review of the literature provides substantive
solutions to mitigate the information security vulnerabilities.
Organizations that measure their security level and determine the
weaknesses should be able to reduce threats and improve information
security, which is what this study intends to do.
Information
Systems
Assets
Literature indicates that
information is considered to be one of the most essential assets to
organizations. Backhouse and Dhillon argued that the concerns in
regards to the protection of the organizational information assets have
increased due to the technology revolution in information systems and
communication media (Backhouse and Dhillon).
The main purpose of information security is to
protect and safeguard the organizations’ assets from threats. “For many
organizations, information and the technology that supports it
represent the organization’s most valuable assets.” (John, 2000).
Assets are classified into two groups which are tangible and
intangible. Schou and Shoemaker (2006) classified information as
intangible because it cannot be counted; it is not the same as computer
parts or soapboxes where it is possible to establish accurate dollar
value. Examples of intangible assets are survey data, trademarks, trade
names, licenses, contracts and procedures.
Intangible assets need to be converted into tangible
assets to establish a value of the intangible assets, as shown in Table
2. To make a value for intangible assets, the assets need to be
documented and the value and the ownership of the assets need to be
determined. This will make enforcement of intangible assets achievable
and allow the court to protect intangible assets the same way as
tangible assets (Schou, and Shoemaker, 2006).
Information and information systems assets are
tangible and intangible. Assets vary from one organization to another.
Protecting information systems from breaches and preventing information
theft is done by defining the information systems assets. Each
organization’s information assets must be evaluated to determine their
information security. Information security is needed for safeguarding
the information and information system assets in the organizations.
Dhillon mentioned that the purpose of defining and characterizing the
organization’s assets allows for better determination behind the threat
(Dhillon).Documentation of the assets will be beneficial to an
organization because it will know what to secure, and it will ensure
updates of assets in the case of changes (Schou, and Shoemaker, 2006).
Security breaches appear due to the lack of documenting and
characterizing the information system assets within organizations.
According to Ciampa (Ciampa) an organization not only protects its
information by classifying its assets in order to protect them from any
threat caused by crackers and hackers, but it also identifies its
vulnerabilities.
Table
2: Information Assets
|
Assets
Name
|
Asset
Background
|
Asset
Category
|
|
Server,
desktop, switch , router, connectors, hub
|
Physical
infrastructure
|
Tangible
|
|
Cables,
cell phone, T.V., DVD, storage devices
|
Physical
infrastructure
|
Tangible
|
|
Articles,
white paper, press release, music files, patent
|
Internet
|
Intangible
|
|
UPS
|
Physical
infrastructure
|
Tangible
|
|
Application
programs
|
Physical
infrastructure
|
Tangible
|
|
Customer,
employees’ and suppliers’ information (credit card, phone number,
SSN#...), Website applications, inventory, supply and demand, marketing
software
|
Internet
|
Tangible
|
|
copyright,
survey data, trademarks, trade names, licenses, contracts, procedures,
programs and procedures.
|
Internet
|
Intangible
|
Methodology
The purpose of this research was to
provide a new
method for evaluating and assessing the information security level to
assist organizations to optimize costs, reduce information security
threats. This research intended to evaluate the information security
level to assist organizations in identifying the measures that are
implemented and help organizations identify any gaps in the current
security implementation. This study identified the effects of measuring
information security level in organizations. This research examined the
results of implementing the most appropriate information security
measures and countermeasures in various organizations.
This section describes the model that was utilized in this research to
gather the data necessary to answer the research question:
What is the significance of categorizing the information security level
in an organization? The hypothesis of this research are the following:
Hypothesis:Defining the information security level
will allow an organization to implement the appropriate security
measures.
This research utilized a quantitative approach. A web-based survey was
conducted to collect the data to examine the correlation between
measuring information security levels and securing confidentiality,
integrity, and availability. A total of 56 participants participated in
a web-based survey containing 57 questions divided into six sections.
Research
Design
The research design selected for this study was a
web-based survey. The survey was designed by this researcher. The
survey was a self-administered questionnaire. A correlation study
examined whether or not a relationship exists between dependent and
independent variables. Pearson’s correlation was conducted to measure
the relationship between the dependent and independent
variable.
With a correlation significant at the 0.05 level (2-tailed).
Selection
of
Participants
The participants for this research were information
system professionals from various organizations. Information system
professionals who had a major role in information systems security were
the primary target. The survey was launched by a third party company.
The name of the third party company is Sendmedia.com.
Data
Collection
The researcher used a web-based survey to gather
data. Surveymonkey.com was chosen as the online survey vendor. The
survey questionnaire was emailed by Senditmedia.com to all 100,000
organizations. The gathered data was uploaded into Microsoft Excel and
Statistical Package for the Social Sciences (SPSS) for analysis.
Data
Analysis
Pearson’s correlation was conducted to measure the
relationship between the dependent and independent variables, with a
correlation significant at the 0.05 level (2-tailed). A total of 56
information security professionals participated in the research from
various organizations. SPSS version 17 was used for data analysis.
Results
Table 3 illustrates
categorizing information security levels in various organizations. In
the banking industry 62.5% of participants indicated that their
security level was moderate and 37.5% has a high security level. In the
education industry, 66.7% of the participants pointed that the security
level is moderate, 16.7% indicated that information security level in
the education industry was low, and the same percentage of the
participants indicated that the level of security was high. In
information technology, 50% of participants indicated that the
information security level was moderate and the same percentage 50%
indicated that the security level was high. In the medical industry,
75% of participants pointed that information security level was high
and 25% of participants indicated that security level was moderate. In
the retail industry, 14.3% of participants indicated that security
level was low, 42.9% of participants indicated that information
security level was moderate, and 42.9 of participants indicated that
information security level was high. In the transportation industry,
100% of participants indicated that the level of security was moderate.
In the telecommunication industry, 58.3% of participants indicated the
information security level was moderate and 41.7 of participants
indicated that information security level was high.
Table 3: Descriptive Statistics for
Information Security Level in Organizations (N-56)
|
Industry
|
Low
|
Moderate
|
High
|
Total
|
|
Banking
|
.0%
|
62.5%
|
37.5%
|
100.0%
|
|
Education
|
16.7%
|
66.7%
|
16.7%
|
100.0%
|
|
Information
Technology
|
.0%
|
50.0%
|
50.0%
|
100.0%
|
|
Medical
|
.0%
|
25.0%
|
75.0%
|
100.0%
|
|
Retail
|
14.3%
|
42.9%
|
42.9%
|
100.0%
|
|
Transportation
|
.0%
|
100.0%
|
.0%
|
100.0%
|
|
Telecommunication
|
.0%
|
58.3%
|
41.7%
|
100.0%
|
Research
Hypothesis
The first
research
hypothesis for this study was: Defining the information security level
will allow an organization to implement the appropriate security
measures.
Table 4 shows descriptive statistics (minimum, maximum, mean, and
standard deviation) for implementing the proper security measures. The
mean for implementing the appropriate security measures in
organizations is 4.40 (SD=.995). The mean of improving overall security
by measuring information security is 4.47 (SD=.790).
Table 4: Descriptive Statistics for the Dependent Variables for
Hypothesis One (N=56)
|
|
Minimum
|
Maximum
|
M
|
SD
|
|
Improving
overall security
|
1
|
5
|
4.47
|
.790
|
|
Implement
the proper
security
measures.
|
1
|
5
|
4.40
|
.955
|
Table 5 Correlation between Defining Information Security Level and
Dependent Variables for the Research Question
|
|
R
|
p
|
|
Improving
overall security
|
.345
|
.011
|
|
Implement
the proper security measures.
|
.430
|
.001
|
Table 5
shows the
correlation computed to investigate this hypothesis. There was a
statistically significant positive correlation between defining
information security level and improving overall security (p=.011), as
well as implementing the proper security measures (p= .001). This
indicates that organizations that measure their information systems
security level will implement the proper security measures and improve
their overall security. As a result, this hypothesis is supported by
this study.
Summary
of Findings
Information
security breaches have a negative impact on organizations
One of the main challenges facing organizations is how to reduce
information security vulnerabilities and protect information security
objectives. Information security objectives are the main concern in
categorizing information security levels. These objectives are
confidentiality, integrity, and availability. Implementing the proper
security measures and measuring their information security levels will
assist organizations in protecting and maintaining their data in the
proper way.
The first
research question of this study was: What is the significance
of categorizing the information security levels in an organization?
Hypothesis one suggested that an organization that measures its
information systems security will implement the most proper information
systems security measures. Hypothesis one was supported by the
findings. Results of this research indicated that measuring information
security levels enable organizations to implement the appropriate
security measures, policies, and countermeasures. The positive
correlation between putting in place the proper security measures and
improving security indicated that organizations that categorized their
security levels utilized the proper security measures. Based on this
research there is a clear support for organizations to measure their
security levels to improve their security by deploying the most
efficient security measures.
In today’s global market intranet is connected to Internet and
an organization’s assets will become a target for various malicious
attacks. The need for protecting the organizational information assets
has increased due to the technology revolution in information systems
and communication media (Dhillon, 2006). The organizations that
participated in this research indicated that there was a need to
implement proper security measures to protect information assets from
malicious attacks. Ensuring information and not securing the
tangible assets of an organization can be risky because this separation
will create an opportunity for an attacker to cause serious harm by
gaining physical access (Schou, and Shoemaker, 2006). Organizations
implementing security measures and countermeasures to protect hardware,
software, and information, such as antivirus, firewalls, encryptions,
password protection, hardening operating systems, hardening network
operating systems, hardening network devices, and employee’s awareness
decreased vulnerabilities and security breaches(Ciampa).
As a result, the answer to the first research
question is that there was a statistically significant positive
correlation between defining information security levels and utilizing
the proper security measures and countermeasures. Measuring information
security levels is a method that helps information security
professionals manages their enterprise more effectively.
Conclusion
This
research constructs a method for defining information security
levels in organizations. Defining information security levels is based
on measuring security layers, which are network security, physical
security, and personal security in organizations. Each layer deploys
several means for security protection. Within each layer, security
measures, policies, and countermeasures can be further classified into
measures aimed at protecting the confidentiality, integrity and
availability of the information.
This
research makes quite a few essential
contributions. It illustrates the importance to correlate between an
organization’s assets, security vulnerability, security attacks, and
evaluating information security levels in order to safeguard the
confidentiality, integrity, and availability of information. Security
measures, countermeasures, policies, procedures and guidelines are
implemented in organizations to maintain the desired level of
information security level. As a result, organizations will be able to
secure their information security objectives.
Organizations are struggling against security attacks. Implementing the
most appropriate security measures in organizations assists
organizations to protect their information’s assets and reduce security
vulnerabilities. The results of the research question led the
researcher to conclude that defining information security levels
enables organizations to implement proper security measures.
Implementing security measures helps organizations to decrease possible
damage and loss due to security attacks.
References
Backhouse,
J. and Dhillon, G. (2000). Information
system security management in the new millennium.
Communications of the ACM, 43, 125-128.
Publisher
- Google
Scholar - British
Library Direct
Chen, C.
C., Shaw, R. S., and Yang, S.C. (2006). Mitigating information security
risks By increasing user awareness: A case study of information
security awareness system. Information Technology, Learning &
Performance Journal, 24, 1-14.
Ciampa, M.
(2005). Security+ Guide to network security fundamentals. (2nd ed.).
Boston: Course Technology.
Dhillon, G.
(2006). Principles of information systems security: Texts and Cases
(1st ed.). Hoboken, NJ: Wiley.
John, L. W.
(2000). COBIT: A
Methodology for Managing and controlling Information and Information
Technology Risks and Vulnerabilities. Journal of Information
Systems, 14, 21-25.
Publisher
- Google
Scholar
Johnson, M.
E. (2008). Information
risk of inadvertent disclosure: An Analysis of File sharing risk in the
financial chain. Journal of Management Information Systems,
25(2), 97-123.
Publisher
- Google
Scholar
Powner,D.GAO
security report. [Online], [Retrieved September 22, 2009],
http://www.gao.gov/.
Kumar, R.
L., Park, S., and Subramaniam, C. (2008). Understanding
the value of countermeasures portfolios in information systems security.
Journal on Management Information Systems, 25, 241-279.
Publisher
- Google
Scholar
Nyanchama,
M. (2005). Enterprise
vulnerability management and its role in information security management.
Information Systems Security, 14, 29-56.
Publisher
- Google
Scholar - British
Library Direct
Richardson,
R. CSI Computer Crime & Security Survey. Computer Security
Institute.[Online], [Retrieved September 22, 2009],
http://www.gocsi.com/forms/csi_survey.jhtml.
Ryan, D.
J., and Ryan, J. J., (2005) Proportional hazards in information
security. Risk analysis: An International Journal, 25,141-149.
Schou, C.,
and Shoemaker, D. (2006). Information assurance for the enterprise: A
roadmap to information security (1st ed). NY: McGraw-Hill Irwi
|

ISSN:1943-7765
Article Access
|
|