'Covert channels' presentation slideshows

Chapter 17: Confinement Problem

Chapter 17: Confinement Problem. What is the problem? Isolation: virtual machines, sandboxes Detecting covert channels Analyzing covert channels Mitigating covert channels. Overview. The confinement problem Isolating entities Virtual machines Sandboxes Covert channels Detecting them

1.18k views • 99 slides

Rootkit Hunting vs. Compromise Detection

Rootkit Hunting vs. Compromise Detection. Joanna Rutkowska invisiblethings.org. Black Hat Federal 2006, Washington D.C., January 25 th 2006. What this talk is going to be about?.

634 views • 49 slides

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542 views • 42 slides

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425 views • 42 slides

Covert channels detection in protocols using scenarios

505 views • 36 slides

Glavlit: Preventing Exfiltration at Wire Speed

423 views • 31 slides

Covert Channels The Silence Must be Heard The Hidden Must be Seen The Secrets Must be Revealed

432 views • 30 slides

Covert Channels

Covert Channels. Dan Fleck CS 469: Security Engineering. 1. 1. These slides are modified with permission from Bill Young ( Univ of Texas). Is BLP Secure ?. H. Consider the simple lattice of labels in the diagram, where H > L. There are no need -to-know categories in this system .

649 views • 29 slides

Covert Channels, Analysis and Mitigation

Covert Channels, Analysis and Mitigation. CS8440 Fall 2014. Introduction. Covert channels are a means of communication between two processes Processes may be: Authorized to communicate, but not in the way they actually are Prohibited from communicating One process is a Trojan

453 views • 29 slides

Analysis and Detection of Network Covert Channels

Analysis and Detection of Network Covert Channels. Sweety Chauhan CMSC 691 IA 30 th Nov. 2005 chauhan2@umbc.edu. Outline. New and Significant Summary of the results Covert network channels timestamp field as covert channel Network timing channel regularity of timing channel

399 views • 26 slides

Identification of Covert Channels inside Linux Kernel Based on Source Code

Identification of Covert Channels inside Linux Kernel Based on Source Code. Agenda. Covert channel definition. Possible sources of CCA (Covert Channel Analysis). Methods of CCA in Source Code. Proposed tool to automate CCA on source code of Linux kernel. Conclusion.

350 views • 24 slides

Identification of Covert Channels inside Linux Kernel Based on Source Code

Identification of Covert Channels inside Linux Kernel Based on Source Code. Agenda. Covert channel definition. Possible sources of CCA (Covert Channel Analysis). Methods of CCA in Source Code. Proposed tool to automate CCA on source code of Linux kernel. Conclusion.

402 views • 24 slides

Language-Based Information-Flow Security (Sabelfeld and Myers)

370 views • 24 slides

Multiple Access Covert Channels

Multiple Access Covert Channels. Ira Moskowitz Naval Research Lab moskowitz@nrl.itd.navy.mil. Richard Newman Univ. of Florida nemo@cise.ufl.edu. Focus. Review covert channels from high assurance computing and anonymity Define quasi-anonymous channel Review analysis of single sender DMC

341 views • 20 slides

Multiple Access Covert Channels

Multiple Access Covert Channels. Ira Moskowitz Naval Research Lab moskowitz@nrl.itd.navy.mil. Richard Newman Univ. of Florida nemo@cise.ufl.edu. Focus. Review covert channels from high assurance computing and anonymity Define quasi-anonymous channel Review analysis of single sender DMC

274 views • 18 slides

Covert Data Channels

Covert Data Channels. When Insiders Attack. Overview. Introduction Covert Storage Channels Covert Timing Channels Channel Operation Channel Detection Discussion. Ping. Ping. Ping. Ping. Introduction. Altering otherwise normal network traffic to secretly transmit information.

257 views • 14 slides

A NOTE ON THE CONFINEMENT PROBLEM

A NOTE ON THE CONFINEMENT PROBLEM. Butler Lampson Xerox PARC. IN BRIEF. The paper discusses How a server program (service) can leak information about its clients to other programs How we can prevent these leaks

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Covert Channels

Covert Channels. Thomas Arnold CSCI 5235/Summer 2010 7/12/2010. Outline. Background Covert Channel Designs Detection Methods Example: Passive Covert Channel Example: Tunneling NDIS. What are covert channels?. You want to communicate with someone without being observed

218 views • 10 slides

Temporal Thermal Covert Channels in Cloud FPGAs

Temporal Thermal Covert Channels in Cloud FPGAs. Shanquan Tian and Jakub Szefer Yale University International Symposium on Field-Programmable Gate Arrays (FPGA) February 26 , 2018. Temporal Thermal Covert Channel in FPGAs.

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COVERT CHANNELS Ravi Sandhu

COVERT CHANNELS Ravi Sandhu. A covert channel is a communication channel based on the use of system resources not normally intended for communication between the subjects (processes) in the system. COVERT CHANNELS. Information is leaked unknown to the high user. COVERT CHANNELS.

91 views • 8 slides