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Security fundamentals every modern SaaS team should know
Marc Navarro ·
Most SaaS security incidents are not sophisticated. They come from stale access, unrotated keys, and permissions nobody reviewed after someone changed teams. Five practices cover the majority of that risk, and a team of any size can implement all of them in a week.
Why do most SaaS breaches happen?
Not through novel exploits. The recurring pattern is access that outlived its purpose — a contractor who still has repository rights, an API key committed in 2023 and never rotated, an admin role granted for one migration and never revoked.
This is good news. It means the highest-value security work is unglamorous and entirely within your control, rather than dependent on outspending an attacker.
The five practices that cover most of the risk
In rough order of effort-to-benefit:
- Enforce SSO and MFA on every system that holds customer data. No exceptions for founders.
- Review access quarterly. Anyone who changed teams keeps only what their current work needs.
- Rotate API keys and tokens on a schedule, not after an incident.
- Keep an audit log you can actually query. A log nobody reads is compliance theatre.
- Make offboarding a checklist with an owner, run the same day someone leaves.
How do you keep this from decaying?
Every practice above decays the moment it depends on someone remembering. Attach each one to a recurring cycle with a named owner, and treat a missed review the way you would treat a missed deploy.
In neevio, teams typically run access review as a recurring issue on the security team's cycle, with the audit log export attached to the issue as evidence. The point is not the tool — it is that the review leaves a trace someone can check.
Frequently asked questions
How often should a SaaS team review access permissions?
Quarterly is sufficient for most teams, with an immediate review whenever someone changes role or leaves. Teams handling regulated data usually move to monthly.
Is SSO worth it for a small team?
Yes. SSO's value is centralised revocation — turning off one account removes access everywhere. That matters more at ten people than at a thousand, because small teams rarely have a formal offboarding process.