ELI5: Explain Like I'm 5

Vulnerability (computing)

Vulnerabilities are weaknesses in computers that can be taken advantage of by someone who wants to access the information stored on the computer without your permission. Imagine your computer is like a house - the doors and windows are like the ways people can access your computer. Vulnerabilities are like the doors and windows that aren't locked - they make it easier for someone to get in without your permission.