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Attack-resilient Mix-zones over Road Networks: Architecture and
Algorithms
Abstract:
Continuous exposure of location information, even with spatially cloaked
resolution, may lead to breaches of location privacy due to statistics-based
inference attacks. An alternative and complementary approach to spatial
cloaking based location anonymization is to break the continuity of
location exposure by introducing techniques, such as mix-zones, where no
application can trace user movements. Several factors impact on the
effectiveness of mix-zone approach, such as user population, mix-zone
geometry, location sensing rate and spatial resolution, as well as spatial
and temporal constraints on user movement patterns.
However, most of the existing mix-zone proposals fail to provide effective
mix-zone construction and placement algorithms that are resilient to timing
and transition attacks. This paper presents MobiMix, a road network based
mix-zone framework to protect location privacy of mobile users traveling
on road networks. It makes three original contributions.
First, we provide the formal analysis on the vulnerabilities of directly
applying theoretical rectangle mix-zones to road networks in terms of
anonymization effectiveness and resilience to timing and transition attacks.
Second, we develop a suite of road network mix-zone construction
methods that effectively consider the above mentioned factors to provide
higher level of resilience to timing and transition attacks, and yield a
specified lower-bound on the level of anonymity. Third, we present a set of
mix-zone placement algorithms that
identify the best set of road intersections for mix-zone placement
considering the road network topology, user mobility patterns and road
characteristics. We evaluate the MobiMix approach through extensive
experiments conducted on traces produced by GTMobiSim on different
scales of geographic maps. Our experiments show that MobiMix offers
high level of anonymity and high level of resilience to timing and transition
attacks, compared to existing mix-zone approaches.
Existing System:
The first category is policy-based solutions that restrict access through
privacy policies. Such policies typically provide an option for users to turn
off location based services or to refuse being tracked.
The second category is represented by location kanonymization techniques
which compute a spatially cloaked location region that has k mobile users
inside it. This approach degrades the resolution of location information in a
controlled fashion to ensure location kanonymity.
Location k � anonymization approaches are targeted at the applications that
do not require true identity or pseudo-identity of mobile users, such as
finding nearby gas-stations or restaurants, and notifying the sale price of
items of interest when a user passes a shopping mall.
Proposed System:
We present MobiMix, a road network based Mix-zone framework to
protect location privacy of mobile users. Compared to the existing
approaches, the MobiMix mix-zones have a number of unique features.
First, the MobiMix mix-zones are developed based on a formal study of the
assumptions of the theoretic mix-zone model and the detrimental effect on
pseudonym anonymity when certain assumptions are violated. We argue
that effective mix-zones should be constructed and placed by taking into
consideration of both road network characteristics and motion behavior of
mobile users.
Second, we introduce an adversary model that launches attacks based on
the road network characteristics and associated motion behavior and
present the MobiMix Mix-zone model for constructing road network aware
mix-zones that are robust against timing attacks and transition attacks.
Third, we develop a suite of attack resilient mix-zone construction and
placement techniques that guarantee unlinkability between the old and
new pseudonyms.
Hardware Requirements:
• System : Pentium IV 2.4 GHz.
• Hard Disk : 40 GB.
• Floppy Drive : 1.44 Mb.
• Monitor : 15 VGA Colour.
• Mouse : Logitech.
• RAM : 256 Mb.
Software Requirements:
• Operating system : - Windows XP.
• Front End : - JSP
• Back End : - SQL Server
Software Requirements:
• Operating system : - Windows XP.
• Front End : - .Net
• Back End : - SQL Server

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attack resilinet mxi zones over road networks architecture and algorithms

  • 1. Attack-resilient Mix-zones over Road Networks: Architecture and Algorithms Abstract: Continuous exposure of location information, even with spatially cloaked resolution, may lead to breaches of location privacy due to statistics-based inference attacks. An alternative and complementary approach to spatial cloaking based location anonymization is to break the continuity of location exposure by introducing techniques, such as mix-zones, where no application can trace user movements. Several factors impact on the effectiveness of mix-zone approach, such as user population, mix-zone geometry, location sensing rate and spatial resolution, as well as spatial and temporal constraints on user movement patterns. However, most of the existing mix-zone proposals fail to provide effective mix-zone construction and placement algorithms that are resilient to timing and transition attacks. This paper presents MobiMix, a road network based mix-zone framework to protect location privacy of mobile users traveling on road networks. It makes three original contributions. First, we provide the formal analysis on the vulnerabilities of directly applying theoretical rectangle mix-zones to road networks in terms of anonymization effectiveness and resilience to timing and transition attacks.
  • 2. Second, we develop a suite of road network mix-zone construction methods that effectively consider the above mentioned factors to provide higher level of resilience to timing and transition attacks, and yield a specified lower-bound on the level of anonymity. Third, we present a set of mix-zone placement algorithms that identify the best set of road intersections for mix-zone placement considering the road network topology, user mobility patterns and road characteristics. We evaluate the MobiMix approach through extensive experiments conducted on traces produced by GTMobiSim on different scales of geographic maps. Our experiments show that MobiMix offers high level of anonymity and high level of resilience to timing and transition attacks, compared to existing mix-zone approaches. Existing System: The first category is policy-based solutions that restrict access through privacy policies. Such policies typically provide an option for users to turn off location based services or to refuse being tracked. The second category is represented by location kanonymization techniques which compute a spatially cloaked location region that has k mobile users inside it. This approach degrades the resolution of location information in a controlled fashion to ensure location kanonymity. Location k � anonymization approaches are targeted at the applications that do not require true identity or pseudo-identity of mobile users, such as finding nearby gas-stations or restaurants, and notifying the sale price of items of interest when a user passes a shopping mall.
  • 3. Proposed System: We present MobiMix, a road network based Mix-zone framework to protect location privacy of mobile users. Compared to the existing approaches, the MobiMix mix-zones have a number of unique features. First, the MobiMix mix-zones are developed based on a formal study of the assumptions of the theoretic mix-zone model and the detrimental effect on pseudonym anonymity when certain assumptions are violated. We argue that effective mix-zones should be constructed and placed by taking into consideration of both road network characteristics and motion behavior of mobile users. Second, we introduce an adversary model that launches attacks based on the road network characteristics and associated motion behavior and present the MobiMix Mix-zone model for constructing road network aware mix-zones that are robust against timing attacks and transition attacks. Third, we develop a suite of attack resilient mix-zone construction and placement techniques that guarantee unlinkability between the old and new pseudonyms. Hardware Requirements: • System : Pentium IV 2.4 GHz. • Hard Disk : 40 GB. • Floppy Drive : 1.44 Mb. • Monitor : 15 VGA Colour.
  • 4. • Mouse : Logitech. • RAM : 256 Mb. Software Requirements: • Operating system : - Windows XP. • Front End : - JSP • Back End : - SQL Server Software Requirements: • Operating system : - Windows XP. • Front End : - .Net • Back End : - SQL Server