What is a Vulnerability? Definition + Examples | UpGuard

This article provides a comprehensive primer on vulnerabilities: definitions, classifications (hardware, software, network, personnel, physical site, organizational), causes (complexity, connectivity, poor passwords, software bugs, unchecked input, human factors), and lifecycle practices such as vulnerability detection, assessment, mitigation, remediation, scanning, and penetration testing. It also discusses the disclosure debate (immediate vs limited), zero-day exploits, vulnerability databases (CVE/CVSS), and defensive measures like bug bounties and third-party risk management.