Security & DevSecOps
Practical
By Samson Tanimawo, PhD
Published Nov 30, 2025
4 min read
Image Signing With Cosign
Sign images at build; verify at deploy.
Sign
cosign sign image:tag.
Stored alongside image in registry.
Verify
Admission controller verifies signature.
Reject unsigned at deploy.
Trust chain
Public key in cluster. Build CI signs with private.
End-to-end trust.