Computer science · University
Data protection and backups · revision notes
Transforming data with a key so unauthorized readers cannot interpret it.
Key ideas and conditions
Encryption
Transforming data with a key so unauthorized readers cannot interpret it.
Backup
A separate recoverable copy of important data.
Patch
An update that corrects defects or known security weaknesses.
Data minimization
Collecting and retaining only data necessary for a defined purpose.
Explain without looking
- Give a short example showing how Patch would be used in practice.
- Summarize why Data minimization matters in the lesson “Data protection and backups”.
Further reading and review references
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