27,298 research outputs found
Anonymous reputation based reservations in e-commerce (AMNESIC)
Online reservation systems have grown over the last recent
years to facilitate the purchase of goods and services. Generally,
reservation systems require that customers provide
some personal data to make a reservation effective. With
this data, service providers can check the consumer history
and decide if the user is trustable enough to get the reserve.
Although the reputation of a user is a good metric to implement
the access control of the system, providing personal
and sensitive data to the system presents high privacy risks,
since the interests of a user are totally known and tracked
by an external entity. In this paper we design an anonymous
reservation protocol that uses reputations to profile
the users and control their access to the offered services, but
at the same time it preserves their privacy not only from the
seller but the service provider
Security Issues in a SOA-based Provenance System
Recent work has begun exploring the characterization and utilization of provenance in systems based on the Service Oriented Architecture (such as Web Services and Grid based environments). One of the salient issues related to provenance use within any given system is its security. Provenance presents some unique security requirements of its own, which are additionally dependent on the architectural and environmental context that a provenance system operates in. We discuss the security considerations pertaining to a Service Oriented Architecture based provenance system. Concurrently, we outline possible approaches to address them
Command & Control: Understanding, Denying and Detecting - A review of malware C2 techniques, detection and defences
In this survey, we first briefly review the current state of cyber attacks,
highlighting significant recent changes in how and why such attacks are
performed. We then investigate the mechanics of malware command and control
(C2) establishment: we provide a comprehensive review of the techniques used by
attackers to set up such a channel and to hide its presence from the attacked
parties and the security tools they use. We then switch to the defensive side
of the problem, and review approaches that have been proposed for the detection
and disruption of C2 channels. We also map such techniques to widely-adopted
security controls, emphasizing gaps or limitations (and success stories) in
current best practices.Comment: Work commissioned by CPNI, available at c2report.org. 38 pages.
Listing abstract compressed from version appearing in repor
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