Security & Constrained Devices Flashcards
1
Q
What does CIA stand for in security?
A
Confidentiality, Integrity, Availability
2
Q
What is tamper resistance?
A
Physical design to stop someone opening/modifying a device
3
Q
What is tamper detection?
A
Alarms or sensors that detect if tampering happens
4
Q
Why is patching hard in IoT?
A
Devices are low-power, cheap, and hard to update
5
Q
What’s a Class 0 device?
A
Extremely limited, no IP stack, can’t be secured
6
Q
What’s a Class 1 device?
A
Limited, can run MQTT/CoAP, has basic security
7
Q
What’s a Class 2 device?
A
Less limited, can run full IP stack (e.g., smart meter)
8
Q
What is a DoSA attack?
A
Denial of Sleep – keeps device awake to drain battery
