426 research outputs found
A deception based framework for the application of deceptive countermeasures in 802.11b wireless networks
The advance of 802.11 b wireless networking has been beset by inherent and in-built security problems. Network security tools that are freely available may intercept network transmissions readily and stealthily, making organisations highly vulnerable to attack. Therefore, it is incumbent upon defending organisations to take initiative and implement proactive defences against common network attacks. Deception is an essential element of effective security that has been widely used in networks to understand attack methods and intrusions. However, little thought has been given to the type and the effectiveness of the deception. Deceptions deployed in nature, the military and in cyberspace were investigated to provide an understanding of how deception may be used in network security. Deceptive network countermeasures and attacks may then be tested on a wireless honeypot as an investigation into the effectiveness of deceptions used in network security. A structured framework, that describes the type of deception and its modus operandi, was utilised to deploy existing honeypot technologies for intrusion detection. Network countermeasures and attacks were mapped to deception types in the framework. This enabled the honeypot to appear as a realistic network and deceive targets in varying deceptive conditions. The investigation was to determine if particular deceptive countermeasures may reduce the effectiveness of particular attacks. The effectiveness of deceptions was measured, and determined by the honeypot\u27s ability to fool the attacking tools used. This was done using brute force network attacks on the wireless honeypot. The attack tools provided quantifiable forensic data from network sniffing, scans, and probes of the wireless honeypot. The aim was to deceive the attack tools into believing a wireless network existed, and contained vulnerabilities that may be further exploited by the naive attacker
Leading hackers down the garden path
Can a hacker be controlled by predetermined deception? Limiting the decision making capabilities of hackers is one technique of network countermeasure that a honeynet enables. By furnishing a honeynet with a realistic range of services but restricted vulnerabilities, a hacker may be forced to direct their attacks to the only available exploits. This research discusses the deployment of a honeynet configured with a deceptive TELNET and TFTP exploit. Four hackers were invited to attack the honeynet and the analysis of their compromise identified if they engaged in a guided pathway to the intended deception. Hand trace analysis was performed on network log files to determine their primary attack vector. Conceptual analysis and frequency analyses methods were adopted to verify the hacker’s compromise and subsequent deception. The results demonstrated how three out of four hackers were lead down a misguided pathway of network deception
Leading hackers down the garden path
Can a hacker be controlled by predetermined deception? Limiting the decision making capabilities of hackers is one technique of network countermeasure that a honeynet enables. By furnishing a honeynet with a realistic range of services but restricted vulnerabilities, a hacker may be forced to direct their attacks to the only available exploits. This research discusses the deployment of a honeynet configured with a deceptive TELNET and TFTP exploit. Four hackers were invited to attack the honeynet and the analysis of their compromise identified if they engaged in a guided pathway to the intended deception. Hand trace analysis was performed on network log files to determine their primary attack vector. Conceptual analysis and frequency analyses methods were adopted to verify the hacker’s compromise and subsequent deception. The results demonstrated how three out of four hackers were lead down a misguided pathway of network deception
Determination Of Synthetic Phenolic Antioxidants In Food Items Using Hplc And Total Antioxidants Using Fia Approaches
Antioksidan fenolik sintetik (SPAs) merupakan bahan tambahan makanan yang
ditambah ke dalam makanan untuk memanjangkan tempoh penyimpanannya.
Synthetic phenolic antioxidants (SPAs) are food additives that are added to food
to extend their shelf life
How to build a faraday on the cheap for wireless security testing
The commonly known security weaknesses associated with the 802.11b wireless standard have introduced a variety of security measures to countermeasure attacks. Using a wireless honeypot, a fake wireless network may be configured through emulation of devices and the TCP/IP fingerprinting of OS network stacks. TCP/IP fingerprinting is one of the most popular methods employed to determine the type of OS running on a target and this information can then be used to determine the type of vulnerabilities to target on the host. Testing the effectiveness of this technique to ensure that a wireless honeypot using honeyd may deceive an attacker has been an ongoing study due to problems conducting TCP/IP fingerprinting in the wireless environment. Research conducted in a university laboratory showed that the results were ineffective and the time taken to conduct testing could be as long as 60 hours. The subsequent exploration of different testing methods and locations illuminated on an ideal research facility called a faraday cage. The design and construction of the faraday is discussed in this paper as an affordable solution for controlled and reliable testing of TCP/IP fingerprinting against the scanning tool Network Mapper (NMAP). The results are useful when looking to deploy a deceptive honeypot as a defence mechanism against wireless attackers
Technical Education 2020 in Singapore: Better Quality, Higher Performance and More Choices through a Market Approach
This article aims to create a vision for technical education in Singapore in the year 2020, and the likely outcomes in terms of quality, performance and choice. Singapore is today one of the world‘s most globalised nations and it has achieved notable economic success. The current technical education system with the Institute of Technical Education (ITE) as the principal provider can be considered highly successful after more than 40 years of development. By analysing the evolution of a contemporary governance model employed by ITE and juxtaposing it with growing global trends in school choice, privatisation and marketisation, there is reason to expect further changes in institutional governance towards more empowerment and use of the Public Private Partnership (PPP) approach to promote greater engagement of the private sector. Visions are created through conceptual analysis of the evolution of a contemporary governance model and concept plans already in place for further development of technical education in Singapore. To date, ITE has introduced the ‗One ITE System, Three Colleges‘ governance model for greater autonomy in frontline operations and has proceeded to use the PPP approach to develop its planned new campuses. With Singapore well known as a nation which strives for excellence in everything it does and ITE embracing the vision to be ‗A Global Leader in Technical Education‘, it is likely that in 2020, technical education in Singapore would offer better quality, higher performance and more choices. This article systematically looks at key governance issues and the PPP approach for technical education, anticipating how they would affect the quality, performance, and delivery of technical education in Singapore and arriving at visions for ‗Technical Education 2020 in Singapore‘
Determination Of Synthetic Phenolic Antioxidants In Food Items Using HPLC And Total Antioxidants Using FIA Approaches [TX553.A73 Y55 2007 f rb].
Antioksidan fenolik sintetik (SPAs) merupakan bahan tambahan makanan yang ditambah ke dalam makanan untuk memanjangkan tempoh penyimpanannya.
Synthetic phenolic antioxidants (SPAs) are food additives that are added to food to extend their shelf life
Composite graph coloring algorithms and applications
A vertex-composite graph is a graph that can have unequal chromaticities on its vertices. Vertex-composite graph coloring or composite graph coloring involves coloring each vertex of a composite graph with consecutive colors according to the vertex\u27s chromaticity with no two vertices adjacent to one another having the same color(s).
New heuristic algorithms including the use of the saturation degree method have been developed in this research. All eleven heuristic algorithms including Clementson and Elphick algorithms were then tested using random composite graphs with five different chromaticity distributions. The best algorithm which uses the least average colors from the experiment is the MLF1I algorithm follow very closely by the MLF2I algorithm.
Four applications, Timetabling, Job Shop Scheduling, CPU Scheduling and Network Assignment Problem, have been formulated as composite graph coloring problems and solved using heuristic composite graph coloring algorithms --Abstract, page ii
Acute lower respiratory tract infection in infancy: a seven year follow-up study
Seven years after hospitalisation for acute lower
respiratory tract infection in infancy, 200 children and
their case -controls were assessed for respiratory status
and epidemiological characteristics. The index group
comprised 100 cases where respiratory syncytial virus had
been responsible for the index illness (RSV +) and 100 cases
in whom this organism had not been found (RSV -).No differences were noted between index and control
children with respect to birth weight and gestational age,
although breast feeding was more frequently observed in
control children. Index children reported more respiratory
symptoms and asthma as well as other indices of respiratory
illhealth. Although index children appeared to be a socially disadvantaged group, parental respiratory symptoms
and smoking habits were comparable in both groups of
children. The atopic background was similar in index and
control populations. At follow -up, index children were
shorter than controls, although their weights were comparable.
Tests of respiratory function were diminished in index children,
who also had evidence of bronchial hyperreactivity.RSV+ and RSV- index children showed similar clinical
characteristics and atopic background. No significant
differences were found in the age at which the index illness occurred, or in the proportion who were breast -fed. The
results of tests of respiratory function and exercise
test were comparable in RSV+ and RSV- children.Children who had suffered bronchitis, bronchiolitis
or pneumonia had similar clinical characteristics compared
to their controls, with the exception that fewer children
who had bronchiolitis were breast -fed, and children who
suffered pneumonia were of lower birth weight. All three
sub -groups of index children reported more respiratory
symptoms and ill health than their controls. Social and
family factors were less favourable when compared to control
children. The atopic background was similar between the
three disease categories, and also between index and control
children. Tests of respiratory function were significantly
reduced only in children who had bronchiolitis, although
the trend in the bronchitis and pneumonia children was also
towards poorer function. A one -way analysis of variance
between disease categories on the differences between case
and control for each respiratory function measurement
showed that differences within a disease category was geater
than the differences between disease categories.Following the index illness, children were reported
to cough, wheeze or remain asymptomatic. Those with symptoms
were almost identical in terms of clinical, social and family
characteristics, as well as atopic background; but differed from their controls. Tests of respiratory function were
diminished in both groups of symptomatic children, with
evidence of bronchial hyper- reactivity. The asymptomatic
index children did not differ from the symptomatic children
with respect to social factors, suggesting that these
contribute little to the occurrence of respiratory symptoms.
Asymptomatic children were of similar height to their
controls. Respiratory function was also comparable although
there was a slight trend to hyper- reactive airways.Children whose index illness was attributed solely to
acute infections (RSV +, non -atopic) reported similar
occurrences of respiratory symptoms to their controls.
Respiratory function was also comparable. When there was
a background history of atopy, children reported more
respiratory symptoms and had significantly lower tests of
respiratory function as well as evidence of bronchial
hyperreactivity when compared with controls. The results
suggest that atopy is a determinant of poor respiratory
function, but they may have also been influenced by the
discrepancy in numbers. Bronchial reactivity was present
in excess in atopic and non -atopic index cases, despite
being significant only in the atopic children.Index children with bronchial reactivity showed
similar clinical, atopic, social and family characteristics
to those without evidence of hyperreactive airways, but these two groups differed clinically and in social and family
background from control children. Those with bronchial
reactivity wheezed more, and there was a greater percentage
of asthmatics. Respiratory function was significantly
diminished compared to controls. There was no excess of
atopic disorders in the index children with hyperreactive
airways.Children without evidence of hyperreactive airways
also reported more respiratory symptoms, but bronchitis
rather than asthma was diagnosed in these children. Except
for a lower PEFR, all other tests of respiratory function
were similar between index and control children.Ventilatory dysfunction paralleled bronchial reactivity.
It is not clear which is of primary importance, or if there
is any relationship between the two. Acute respiratory
infection may have caused both these abnormalities, or they
could have predated the event, rendering children more
susceptible to infection
If You go Down the Internet Today - Deceptive Honeypots
This is preliminary research into the effectiveness of deceptive defensive measures in particular honeypots that use deceit as a primary defensive and offensive mechanism. Initial research has been conducted using the Deception Tool Kit and its ability to fool commonly available network scanning tools such as Nessus and Nmap The preliminary research indicates that these deceptive tools have a place in modern network defence architecture
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