Depreciation in cybersecurity refers to the gradual reduction in the value of technology assets, such as hardware, software, or infrastructure, over time. This decline can result from regular wear and tear, technological advancements, or evolving security threats that render older systems less effective or obsolete. Understanding depreciation is crucial for cybersecurity professionals to ensure timely upgrades, maintain robust defenses, and optimize asset management. Proper accounting for depreciation helps organizations plan for replacements, budget for future investments, and avoid security vulnerabilities associated with outdated equipment or software.