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Chapter 10

Chapter 10. Monitoring Systems. Monitoring Systems. Most examples here monitor physical systems Alarms PrePayment Meters Taximeters, Tachographs, Truck Speed Limiters. Alarms. Threat Model Who is your attacker See page 209 4 examples Deter – Detect – Alarm – Delay – Respond

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Chapter 10

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  1. Chapter 10 Monitoring Systems

  2. Monitoring Systems • Most examples here monitor physical systems • Alarms • PrePayment Meters • Taximeters, Tachographs, Truck Speed Limiters

  3. Alarms • Threat Model • Who is your attacker • See page 209 4 examples • Deter – Detect – Alarm – Delay – Respond • Sensors Page 211 • Eliminating false positives • Layers of defenses -- barriers

  4. Attacks • Sensors • Feature interactions • Attacks on Communications • Physical security

  5. Prepayment meters • Purchase one place use it in another location • Protect against forgery and duplication • Petty fraud acceptable risk • Systematic fraud is not • Great study of prepayment meter pages 215-222 • It is cool to read and think about these systems

  6. Taximeters, Tachographs, Speed limiters. • Odometer in cars • Taximeters • Black Boxes • What goes wrong with Tachographs? • 70% procedural • 20% tamper with supply to tachograph • 6% tamper with instrument • hightech

  7. Tachosmart • European Union • Designing smart card based system • Does little to eliminate procedural fraud • Issues of enforcement between countries • Use of GPS units (privacy) • Turnover time to equip trucks • Digital open to additional fraud • Resurrected Duckling

  8. Discussion articles • Prepayment meters • Other uses of Resurrected Duckling

  9. List of Resources • Alarms • http://www.stevenspublishing.com/Stevens/SecProdPub.nsf/frame?open&redirect=http://www.stevenspublishing.com/stevens/secprodpub.nsf/PubHome/180E42469D7AD8A586257145005CE634?Opendocument • http://www.simmons.com.au/perimeter.htm

  10. List of Resources • Alarms and network security • http://www.usenix.org/publications/login/2000-6/features/police.html • Secure Tachographs • http://www.ftp.cl.cam.ac.uk/ftp/users/rja14/tacho.pdf • Tamper resistance • http://www.cl.cam.ac.uk/~rja14/tamper.html

  11. List of resources • Tachosmart • http://www.ntc.gov.au/ViewPage.aspx?page=A02304401400730020 • Resurrected Duckling • http://www.cl.cam.ac.uk/~fms27/duckling/duckling.html • Meter Security • http://www.metering.com/archive/014/25_1.htm

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