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Search Publications by: Richard Candell (Fed)

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Displaying 126 - 150 of 150

Survey and New Directions for Physics-Based Attack Detection in Control Systems

November 21, 2016
Author(s)
David Urbina, Jairo Giraldo, Alvaro Cardenas, Junia Valente, Mustafa Faisal, Niles O. Tippenhauer, Justin Ruths, Rick Candell, Heinrik Sandberg
Monitoring the "physics" of control systems to detect attacks is a growing area of research. In its basic form a security monitor creates time-series models of sensor readings for an industrial control system and identifies anomalies in these measurements

A Tetherless, Absolute-Time Channel Sounder, Processing, and Results for a Complex Environment

November 4, 2016
Author(s)
David R. Novotny, Alexandra E. Curtin, Catherine A. Remley, Peter B. Papazian, Jeanne T. Quimby, Richard Candell
we present a channel sounder that can operate without a tether and still maintain an absolute time reference between the source and receiver. Based on a sliding correlator, with synchronized rubidium clocks to generate phase references for the up- and down

Limiting The Impact of Stealthy Attacks on Industrial Control Systems

October 28, 2016
Author(s)
David Urbina, Alvaro Cardenas, Niles O. Tippenhauer, Junia Valente, Mustafa Faisal, Justin Ruths, Rick Candell, Heinrik Sandberg
While attacks on information systems have for most practical purposes binary outcomes information was manipulated/eavesdropped, or not), attacks manipulating the sensor or control signals of Industrial Control Systems (ICS) can be tuned by the attacker to

Variability of Sounder Measurements in Manufacturing Facilities

June 27, 2016
Author(s)
Jeanne Quimby, Alexandra Curtin, David R. Novotny, Chih-Ming Wang, Rick Candell
Uncertainties in the linear regression fit of Path Loss are derived from variability in position. These uncertainties are used to determine the required positional accuracy for channel sounder measurements.

A Simulation Framework for Industrial Wireless Networks and Process Control Systems

May 6, 2016
Author(s)
Yongkang Liu, Richard Candell, Nader Moayeri, Kang B. Lee
Factory and process automation systems are increasingly employing information and communications technologies to facilitate data sharing and analysis in integrated control operations. Wireless connections provide flexible access to a variety of field

Towards a Systematic Threat Modeling Approach for Cyber-physical Systems

December 15, 2015
Author(s)
Goncalo Martins, Sajal Bhatia, Xenofon Koutsoukos, Keith A. Stouffer, CheeYee Tang, Rick Candell
Cyber-Physical Systems (CPS) are systems with seamless integration of physical, computational and networking components. These systems can potentially have an impact on the physical components, hence it is critical to safeguard them against a wide range of

An Industrial Control System Cybersecurity Performance Testbed

December 10, 2015
Author(s)
Richard Candell, Timothy A. Zimmerman, Keith A. Stouffer
The National Institute of Standards and Technology (NIST) is developing a cybersecurity performance testbed for industrial control systems. The goal of the testbed is to measure the performance of industrial control systems (ICS) when instrumented with

Effects of Wireless Packet Loss in Industrial Process Control Systems

November 12, 2015
Author(s)
Yongkang Liu, Rick Candell, Nader Moayeri
Timely and reliable sensing and actuation control are essential in networked control. This depends on not only the precision/quality of the sensors and actuators used but also on how well the communications links between the field instruments and the

Software-defined Radio Based Measurement Platform for Wireless Networks

October 15, 2015
Author(s)
I-Chun Chao, Kang B. Lee, Rick Candell, Frederick M. Proctor, Chien-Chung Shen
There has been a dramatic push to adopting wireless networking technologies and protocols (such as 802.11, ZigBee, WirelessHART, Bluetooth, ISA100.11a, etc.) into time-critical networks. End-to-end latency is critical to many distributed applications and

A Cybersecurity Testbed for Industrial Control Systems

October 9, 2014
Author(s)
Richard Candell, Keith A. Stouffer, Dhananjay Anand
The National Institute of Standards and Technology (NIST) is developing a cybersecurity testbed for industrial control systems (ICS). The goal of this testbed is to measure the performance of an ICS when instrumented with cybersecurity protections in