Testing debt refers to the accumulated risk and potential future costs that arise when software testing is insufficient, incomplete, or skipped during the development process. This debt is similar to technical debt, but specifically focuses on the testing phase. When teams rush to release software without thorough testing, defects and vulnerabilities may remain undiscovered, leading to increased maintenance, remediation costs, and security risks later. Over time, testing debt can make it harder to add new features, fix bugs, or ensure compliance with security standards. Addressing testing debt early helps maintain software quality and reduces long-term risks.