What Encryption at rest means
If a server, laptop or backup is stolen, encryption at rest keeps the data useless to the thief. Most reputable cloud and hosting providers offer it, but it should be confirmed, especially for regulated data. Protecting the keys matters as much as the encryption.
Why it matters for your website
If someone steals a backup, a laptop or a database copy, encryption at rest keeps the data unreadable. Many privacy and security rules expect it for sensitive data like health or payment records. It is often a simple setting with your host or cloud provider, but only if you turn it on.
Example
A therapy practice stores intake form uploads in encrypted cloud storage, so a misplaced backup file would show only scrambled data to anyone without the key.
Tips
- Ask your host whether databases and backups are encrypted by default.
- Store encryption keys separately from the data they protect.
- Encrypt laptops and phones that hold customer data.
Common mistakes
- Encrypting the live database but leaving exported backups as plain files.
- Keeping the encryption key in the same place as the encrypted data.
Questions about Encryption at rest
What is Encryption at rest?
Protecting stored data, such as databases, backups and files, so it is unreadable without the key.
Is encryption at rest required by law?
Some laws and standards expect it for certain data, such as health or payment information. Requirements vary, so check the rules that apply to your industry.
Does HTTPS cover encryption at rest?
No. HTTPS protects data while it travels. Encryption at rest protects data once it is stored on disks, databases or backups.
