GitLab SSH keys: what IAM teams need to control now

TL;DR: GitLab SSH keys quietly enable code pushes, deployments, and CI/CD access, but the article argues that weak hygiene, reuse, and long-lived keys create credential abuse risk for both developers and machine identities, according to Apono. Static SSH key practices expose the governance gap in NHI management: access that persists longer than trust can be safely verified.

NHIMG editorial — based on content published by Apono: The Secure Guide to Managing GitLab SSH Keys

By the numbers:

• 88% of all web application attacks involved stolen credentials.
• Only 44% of organisations are currently using a dedicated secrets management system.

Questions worth separating out

Q: How should security teams govern GitLab SSH keys used by automation?

A: Treat every automation SSH key as a non-human identity credential with an owner, purpose, scope, and expiry date.

Q: Why do GitLab SSH keys create more risk than passwords in some environments?

A: SSH keys often bypass the visibility and alerting that teams expect from password-based access.

Q: What breaks when GitLab SSH keys are not rotated or expired?

A: The organisation loses track of which keys are still valid, which systems still trust them, and whether a retired person or workflow can still reach critical repositories.

Practitioner guidance

• Inventory GitLab SSH keys by owner and workload Build a complete register of who or what uses each key, which repository or deployment it touches, and whether it supports a human or a machine identity.
• Set explicit expiry on every non-human SSH key Use key expiration for contractors, ephemeral environments, and automation accounts so access ends with the task rather than surviving by default.
• Rotate keys on a defined lifecycle schedule Replace long-lived keys with a rotation cadence tied to device change, role change, or workflow retirement, and remove old public keys immediately.

What's in the full article

Apono's full guide covers the operational detail this post intentionally leaves for the source:

• Step-by-step SSH key setup commands for GitLab on macOS, Linux, and Windows.
• Rotation and expiry workflows for contractor and ephemeral environment keys.
• Practical troubleshooting for ssh-agent, file permissions, and known_hosts issues.
• GitLab-specific examples for deploy keys, audit events, and offboarding API usage.

👉 Read Apono's guide to managing GitLab SSH keys →

GitLab SSH keys: what IAM teams need to control now?

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