Security stalks the margins. Firmware is an attractive surface for compromise—the layer that boots before the operating system and whispers the device’s first commands. A tiny exploit can give an attacker the keys to persistence: modify the bootloader, and a backdoor is always waiting at power-up. That’s why firmware updates carry signatures and cryptographic checks—small rituals that prove authenticity. But signatures can be bypassed, and supply chains can be poisoned. For every locked bootloader, there’s some determined tinkerer documenting their journey around it with a mixture of pride and remorse.
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