Computing Primetime: Cyber Security: Planes Trains and Automobiles

·29 min·1 clip

Stephan Savage explains how 20–40 computers can remotely control a car’s brakes, power, and lights.

1. Computing Primetime: Cyber Security: Planes Trains and Automobiles examines embedded computers in cars, transportation systems, and airport scanners.\n2. UC San Diego computer science professors Stephan Savage and Hoab Sachin matter because their research reverse-engineered vehicle networks and inspected a Rapiscan Secure 1000 scanner.\n3. The central hook is that software and network connections can give ordinary-looking machines control over brakes, screening alerts, and other safety functions.\n4. Savage says modern cars contain 20 to 40 computers that coordinate acceleration, airbags, fuel pumps, braking, and stability control.\n5. Researchers used wireless and network pathways to compromise an unmodified car remotely, including applying its brakes without driver cooperation.\n6. The interview identifies the OBD2 port, tire-pressure signals, Bluetooth, and telematics as digital interfaces that expand a car’s attack surface.\n7. Airport security devices include metal detectors, millimeter-wave scanners, luggage X-rays, and backscatter X-ray systems whose software mediates what operators see.\n8. Researchers bought a Rapiscan Secure 1000 on eBay and found DOS, Windows, replaceable software, and no access controls.\n9. Savage rejects a security “silver bullet” and favors layered hardening, crash response, threat analysis, and independent scrutiny.\n10. Best for listeners interested in transportation technology, embedded systems, and practical cybersecurity tradeoffs.

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A grounded look at embedded security, where flawed software can make solid detection miss the moment that matters.

Computers keep turning up in places that once looked mostly mechanical, and this episode tracks the security stakes from a wireless building motion sensor to airport screening. Its cleanest idea is that a detector is never just a detector anymore.

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Want to know how a machine can detect metal and still fail to raise the alarm?

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