What Is Firmware?

What Is Firmware?

 By Charles Joseph | Cybersecurity Advocate
 Last update: November 25, 2023

Firmware is a software program that’s embedded into hardware devices.

It’s essentially the operating system for many individual types of electronics, such as modems and routers, computers, medical equipment, cell phones, cameras, external hard drives, and more.

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Firmware acts as an interface between the hardware components within the device and its user or operator. It’s like a set of instructions or guidelines that tell a computer device what it should do when you turn it on.

Firmware is similar to the software that runs on your phone, but the firmware is built into the hardware of the device so it can’t be easily updated or changed like regular software.

It controls how the different parts of your device – its chips and circuits – work together, just like how our brains control everything we do without us even thinking about it.

"Amateurs hack systems, professionals hack people."
-- Bruce Schneier, a renown computer security professional