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» On the Negotiation of Access Control Policies
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CCS
2006
ACM
13 years 11 months ago
Beyond separation of duty: an algebra for specifying high-level security policies
A high-level security policy states an overall requirement for a sensitive task. One example of a high-level security policy is a separation of duty policy, which requires a sensi...
Ninghui Li, Qihua Wang
CCS
2007
ACM
14 years 2 months ago
Dynamic pharming attacks and locked same-origin policies for web browsers
We describe a new attack against web authentication, which we call dynamic pharming. Dynamic pharming works by hijacking DNS and sending the victim’s browser malicious Javascrip...
Chris Karlof, Umesh Shankar, J. Doug Tygar, David ...
GLOBECOM
2007
IEEE
14 years 2 months ago
Cognitive Medium Access: A Protocol for Enhancing Coexistence in WLAN Bands
— In this paper we propose Cognitive Medium Access (CMA), a protocol aimed at improving coexistence with a set of independently evolving WLAN bands. A time-slotted physical layer...
Stefan Geirhofer, Lang Tong, Brian M. Sadler
INFOCOM
2007
IEEE
14 years 2 months ago
Optimal Jamming Attacks and Network Defense Policies in Wireless Sensor Networks
Abstract— We consider a scenario where a sophisticated jammer jams an area in a single-channel wireless sensor network. The jammer controls the probability of jamming and transmi...
Mingyan Li, Iordanis Koutsopoulos, Radha Poovendra...
CCS
2008
ACM
13 years 10 months ago
Flexible security configuration for virtual machines
Virtual machines are widely accepted as a promising basis for building secure systems. However, while virtual machines offer effective mechanisms to create isolated environments, ...
Sandra Rueda, Yogesh Sreenivasan, Trent Jaeger