| Keyword | Definition |
|---|---|
| blacklist | blocking messages from unreliable sources |
| data breach | when security has been compromised so personal data has been shared without permission |
| data policy | rules which people in an organisation or business have to stick to in order to make sure data security isn't compromised |
| email filter | checking all email messages to block messages that may contain security risks |
| human error | when someone makes a mistake that leads to unauthorised access to data |
| training | educating people about the risks |
| whitelist | only allowing messages from reliable sources |
