Class 07 - birlzhimself/401-Reading-Notes GitHub Wiki
From your day to day computer use, provide examples of when data is at rest and when it is in transit.
From day-to-day computer use, data can be either "at rest" or "in transit".
Data at rest refers to data that is stored on a device, such as a hard drive, USB drive, or in the cloud. Examples of data at rest include:
- Documents
- Spreadsheets
- Photos, or other files that are saved on your computer.
On the other hand, data in transit refers to data that is moving from one location to another, such as when you send an email, make an online purchase, or use a messaging app. Examples of data in transit might include login credentials, credit card numbers, or other sensitive information that is transmitted over the internet.
Explain the role data encryption with regards to the CIA triad.
Data encryption plays an important role in protecting both data at rest and data in transit, as it helps to ensure the confidentiality, integrity, and availability of the data.
In the context of the CIA triad, data encryption primarily supports the "confidentiality" aspect. By encrypting data, we can prevent unauthorized individuals from accessing the information, even if they are able to intercept it while it is in transit or gain access to the storage device where it is stored at rest.
For example, when we use HTTPS to connect to a secure website, the data that is transmitted between our computer and the website is encrypted to prevent eavesdropping and tampering. Similarly, when we use full disk encryption on our hard drives, our data is protected if someone steals our computer or gains access to it without our permission.
Overall, data encryption is a critical tool for protecting sensitive information and maintaining the confidentiality of data at rest and in transit.