Component placement is the deliberate arrangement of electronic parts on a printed circuit board so they fit, connect, and operate correctly. Good placement keeps traces short, separates noisy and sensitive circuits, and leaves room for assembly, testing, and repair. It is a core part of PCB layout, not just a drawing choice.
In cyber security, placement affects how easy a device is to probe, tamper with, or analyze. Sensitive parts such as memory, debug headers, clocks, and power circuitry are often placed to reduce signal leakage and physical access. Poor placement can expose test pads, make side-channel measurements easier, or create weak points for hardware modification. Defenders use careful placement, spacing, shielding, and secure enclosure design to improve reliability and resist physical attacks.