Security vulnerabilities and security defects are not synonymous, but rather different concepts that relate to the security of software products or services. A security vulnerability is a weakness or flaw in the software that can be exploited by an attacker to compromise the confidentiality, integrity, or availability of the system or data12. A security defect is a mistake or error in the software code that causes the software to behave in an unexpected or incorrect way34. A security defect may or may not lead to a security vulnerability, depending on the context and impact of the defect. For example, a security defect that causes a buffer overflow may result in a security vulnerability that allows an attacker to execute arbitrary code on the system. However, a security defect that causes a spelling error in the user interface may not pose a security risk at all.

Security vulnerabilities and security defects have different causes, consequences, and solutions. Security vulnerabilities are often caused by design flaws, logic errors, or insufficient security controls in the software12. Security defects are often caused by poor coding practices, lack of testing, or human mistakes in the software development process34. Security vulnerabilities can have severe consequences for the software users, providers, and stakeholders, such as data breaches, identity theft, fraud, or sabotage12. Security defects can have various consequences for the software functionality, performance, or usability, such as crashes, glitches, or bugs34. Security vulnerabilities require proactive and reactive measures to prevent, detect, and mitigate the potential attacks, such as security testing, patching, monitoring, and incident response12. Security defects require corrective and preventive measures to identify, resolve, and avoid the errors, such as code review, debugging, refactoring, and quality assurance34.

Therefore, the statement that security vulnerabilities and security defects are synonymous is FALSE. They are distinct but related aspects of software security that require different approaches and techniques to address them. References: 1: What is a Software Vulnerability? | Veracode 2: Software Security: differences between vulnerabilities and Defects 3: What is a Software Defect? - Definition from Techopedia 4: Are vulnerabilities discovered and resolved like other defects? - Springer