In cybersecurity contexts, 'scrap metal' does not refer to a digital concept but rather to physical, discarded metal pieces. These materials are often collected and repurposed for building or reinforcing mechanical projects, including physical security barriers, server racks, or custom hardware enclosures. While not inherently digital, the use of scrap metal can play a role in securing devices or infrastructure by providing cost-effective, sturdy protection against tampering or unauthorized physical access. Its relevance in cybersecurity emerges when considering the physical layer of defense for critical systems.