What is Encryption in transit and at rest?
In short
Data in transit, moving across a network, is protected by encrypted connections such as secure web connections. Data at rest, stored on disks, databases or backups, is protected by encrypting the storage or the files.
Key takeaways
- Encryption at rest protects lost or stolen laptops and drives.
- Data being processed (in use) is usually unencrypted, so access controls still matter.
- Either way, protecting the keys is critical.
Where it's tested
ISC: Information Security Fundamentals — study notes, a five-minute revision sheet and practice questions.
Practise: 3 questions
Question 1 of 3 · 0 answered
To send a confidential message that only the intended recipient can read, which key should the sender use to encrypt it?