Audit Logs: The IBYOK Feature Most People Ignore Until They Need It

Audit logs are boring. They're a list of what happened, when, by whom. Most people set up a vault, generate some keys, and never look at the audit log section again.

That's a mistake. Not because the logs are interesting in normal times — they're not — but because they're the only way to answer a few questions that come up at moments you'd rather not be googling for tools.

What audit logs actually capture

For every credential request, IBYOK records: who asked, when they asked, which credential they asked for, what scope they were granted, and (importantly) whether the request was approved or denied.

For administrative actions: who created or revoked a credential, when, and what the credential's scope was at the time.

This sounds like surveillance. It's not. It's the equivalent of a bank's transaction log. Boring 99% of the time, indispensable the 1% you need it.

The questions audit logs answer

"When was this credential last used?" — useful when you're trying to figure out if a credential is still in use somewhere or if you can safely revoke it.

"Who issued this credential?" — useful when you're auditing who has access to what, especially if multiple team members can issue credentials.

"Was this credential used right before the bill spiked?" — useful when something looks off in your billing dashboard and you want to know if it's a credential issue or a usage issue.

"Did anyone access prod credentials from a non-prod environment?" — useful when you've set up environment scoping and want to verify it's holding.

None of these are questions you're asking on a normal Tuesday. All of them are questions that come up the moment something feels wrong, and the audit log is the fastest path to an answer.

The monthly check

Once a month, open the audit log and scan the last 30 days. You're looking for two things:

1. Credentials that haven't been used. If a credential hasn't been touched in 30 days, it's a candidate for revocation. Old credentials are attack surface — they exist, they're valid, but you don't know if anyone's monitoring them. Revoke aggressively.

2. Credential usage from unexpected sources. If a dev credential is suddenly being used from a production server, or vice versa, something's wrong. Could be a misconfiguration. Could be something more concerning. Either way, you want to know.

The whole monthly review takes about ten minutes if your setup is normal. Most months you find nothing. The month you find something, you really want the ten minutes you spent the other 11 months not to have been zero.

The retention question

Audit logs in IBYOK are retained for the lifetime of your account. You don't need to download them or back them up — they're persistent. If you ever need to look back at an action from a year ago, the record is there.

This matters for compliance situations (you can prove what happened and when) and for incident reconstruction (you can trace exactly what was accessed during a window of suspicious activity). Both are situations you hope you never face. Both are situations the audit log makes survivable.

The mindset

Audit logs are a "I'm glad we set this up" feature, not a "look at this cool feature" feature. They never sell themselves. You don't appreciate them until the day you do.

Set them up. Check them once a month. Forget about them the rest of the time. That's the whole posture. The day you need them, you'll be very glad you did.

— Jeff