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Encrypt sensitive data at rest, not just in transit

1-2 hr Impact: medium Effort: medium ✓ Manual completion

Encrypting sensitive data at rest means your database and backup storage protect data even when it is sitting still, not moving, complementing the in-transit protection HTTPS already provides for data actively being transmitted.

HTTPS protects data moving between browser and server, but a compromised database or a stolen backup file exposes everything in plain readable form unless the data itself is also encrypted at rest.

The full picture

Encrypting sensitive data at rest addresses a genuine, distinct protection dimension from the encryption in transit that HTTPS provides — while HTTPS protects data as it travels across networks, data-at-rest encryption protects that same data while it's actually stored on your servers or databases, addressing a different, complementary risk scenario.

This distinction matters because a security compromise that provides an attacker with direct access to your storage systems — whether through a server breach, stolen backup media, or other means — could potentially expose sensitive data in plain, readable form if that data isn't independently encrypted at rest, even if all your in-transit encryption via HTTPS was properly implemented and functioning correctly.

Genuine implementation of at-rest encryption typically involves encrypting your actual databases or storage systems containing sensitive information, using proper key management practices to ensure the encryption keys themselves are appropriately secured and not simply stored alongside the encrypted data in a way that would undermine the protection this encryption is meant to provide.

This represents a meaningful additional protective layer specifically valuable for genuinely sensitive data categories — personal information, financial data, or other content where a compromise providing direct storage access would represent particularly severe consequences, making this encryption investment proportionally more valuable for businesses handling these more sensitive data categories.

How to do it

  1. 1
    Identify your genuinely sensitive data fields
    Customer personal information, payment details, anything meaningfully sensitive if exposed.
  2. 2
    Confirm your database supports and has encryption at rest enabled
    Most modern managed database services offer this as a configuration option.
  3. 3
    Confirm backup storage is also encrypted
    A backup file is just as exposed as the live database if it is not also encrypted.
  4. 4
    Verify encryption is genuinely active, not just available
    Confirm the actual setting is enabled, not just theoretically supported by the platform.

Common mistakes

How you will know it is done

Sensitive data in your database and backups is confirmed encrypted at rest.

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