Secrets vs Encryption Keys: What’s the Difference Really?

secrets and encryption keys are not the same thing

You’ve probably heard security teams say:

“Make sure your secrets are safe.”
“Rotate your encryption keys.”

Sounds similar, right? But secrets and encryption keys are not the same thing.
Mixing them up is one of the most common (and dangerous) misunderstandings in DevOps and cloud security.

In this issue, let’s break it down simply.

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1. The Problem Space

Every system — from Kubernetes clusters to mobile banking apps — needs to protect sensitive data. But if you treat all sensitive information the same way, you risk:

• Storing passwords where encryption keys should go.

• Using the wrong tool (Secrets Manager instead of KMS).

• Leaving data exposed because you misunderstood the boundary.