Correct Answer: B
The area of embedded devices that are most commonly attacked is firmware. Firmware is a type of software that is embedded in a hardware device and controls its basic functions, such as booting, loading, or updating.
Firmware is often stored in read-only memory (ROM) or flash memory, which makes it difficult to modify or erase. Firmware can be attacked by exploiting vulnerabilities in the firmware code, design, or configuration, or by injecting malicious code into the firmware update process. Firmware attacks can compromise the security, functionality, or performance of the embedded device, or even render it unusable or inaccessible. References:
CISSP All-in-One Exam Guide, Eighth Edition, Chapter 3: Security Engineering, page 106; [Official (ISC)2 CISSP CBK Reference, Fifth Edition, Chapter 3: Security Engineering, page 168]