In cyber security, a vulnerability is a weakness which can be exploited by a cyber attack to gain unauthorized access to or perform unauthorized actions on a computer system. Vulnerabilities can allow attackers to run code, access a system's memory, install malware, and steal, destroy or modify sensitive data.

Emotional. The definition of vulnerability, by Brene Brown, is "uncertainty, risk, and emotional exposure". Brown goes on to suggest that vulnerability is our most accurate measure of courage: to be vulnerable, to allow ourselves to be seen. Vulnerability is typically thought of as the center of emotions such as: grief, shame, fear, ...