|  | 8.9 | Security
| 8.9.3 | The need to employ data encryption to protect network data as a good practice to ensure network security
Data encryption provides the secure delivery of information being sent over the internetwork. It takes the information, which is written in plain text and codes it into a text called ciphertext, which resembles nothing, making it unreadable. When the data is received, it is decrypted from ciphertext and converted back into its original text.