| Keyword | Definition |
|---|---|
| bug fix | a type of update to a program which doesn't add any new features but corrects mistakes in previous versions |
| closed source | a type of software where only one company can access, fix and improve the code which makes a program work (not usually free) |
| new feature | a type of update to a program which makes it do more than it could before |
| open source | a type of software where anyone can access, fix and improve the code which makes a program work (usually free) |
| source code | program code which contains instructions for how the program runs |
| vulnerability | a security risk within a program that hackers could use to damage or access your computer |
