Structural Feature Based Anomaly Detection for Packed Executable Identification - Computational Intelligence in Security for Information Systems - page 282

3. Location privacy: The UPM provides three levels of location privacy namely
transparent location, protected location, or private location. The user portal
plays the main role to preserve location privacy. In private location privacy,
the portal completely hides the user location from other parties. In protected
location, the portal confirms the user existence in its controlled area without
divulging the users exact location. In transparent location policy, the portal
provides the exact geographical location of the user to the other parties.
4. Time privacy: The UPM provides three levels of time privacy namely trans-
parent time, protected time, and private time for each party which specifies
in its privacy preferences file. Control of time privacy is on the party that
receives services or data. In transparent time the parties do not put any
time restriction, protected time confines all parties communication, services,
or data saving only to a specific time period, and real time policy limits
the communication and data saving period to only the communication time
between these parties.
As described, the UPM could provide all communicating parties with control
over content, identity, location, and time.
3.4 Discussion of Model Scalability
A model is scalable if it provides the following supports:
1. A common communication platform for communicating between devices.
This platform should be supported by different device vendors and it has to
have the ability to transfer privacy policies properly.
2. Distribution of decision making processes. There should not be any central-
ized point for decision in the model that confines the model scalability.
As it was described the models scalability measures two factors namely the
model platform independence and its ability to make all decisions distributed.
The following discusses the proposed UPM supports for both of the above factors:
1. Platform independence: The UPM provides platform independence by using
XML as a common communication platform. XML format lets any devices
with any embedded platform which just has the ability to send and receive
data through XML tags, to join and use the model. With fast spreading of
XML acceptance on different platforms, selecting XML provides higher level
of platform independence.
2. No centralized decision making point: There is no centralized decision making
point in the UPM. All decisions and responsibilities are distributed among
three parties in three layers of the model. Portals are responsible for location
privacy in context layer, light houses are responsible for identity privacy in
services layer, and time privacy decisions are making on the receiver party
itself. So there is no centralized decision making point in our model which
confines the model scalability.
So the UPM could provide both scalability factors.