Security against network attacks in supervisory control systems

Cyber-physical systems (CPSs) integrate computing and communication capabilities to monitor and control physical processes. In order to do so, communication networks are commonly used to connect sensors, actuators, and controllers to monitor and control physical systems. The use of communication networks increases the vulnerability of the CPS to cyber attacks that can drive the system to unsafe states. One of the most powerful cyber attacks is the so-called man-in-the-middle attack, where the intruder can observe, hide, create or change information in the attacked network channel. We propose in this work a defense strategy that detects intrusions and prevents damages caused by man-in-the-middle attacks in the sensor and/or control communication channels in supervisory control systems. We also introduce the definition of NA-Safe controllability, that is related with the possibility of detecting an attack in the network and preventing the reach of unsafe states, and we propose an algorithm to verify this property.

Grantor dc:publisher

Universidade Federal do Rio de Janeiro

Year dc:date.issued

2017

Author dc:creator

• Lima, Públio Macedo

Advisor dc:contributor.advisor

• Moreira, Marcos Vicente de Brito

• Sistemas embutidos
• Segurança
• Sistemas de controle

Statement dc:rights

• Acesso Aberto

Language dc:language

eng

Handle dc:identifier.uri

http://hdl.handle.net/11422/6236

OAI identifier oai:identifier

oai:pantheon.ufrj.br:11422/6236