“Once a year.” It’s the answer everyone gives, and it works if the goal is keeping an auditor happy. It doesn’t tell you whether your systems are safe today.
Think about the last twelve months at your company. Somebody pushed an endpoint late on a Friday. A cloud permission got opened up to fix a deployment and never closed. A new vendor got access to customer data. Your January pen test report doesn’t know any of that happened.
So the real answer is “it depends,” and it depends on things you already know: how fast you change, what you’re protecting, and what your customers and auditors expect. Let’s turn that into a schedule.
Sunvak Boreal tests web applications, APIs, mobile apps, cloud environments, networks, and infrastructure. If you want a second opinion on your testing rhythm, we’re happy to give one.
The Short Answer
Here’s where we’d start for most teams. Test at least once a year if you hold customer data or have compliance obligations. Test after big changes, like a major release, a cloud migration, or a new login system, without waiting for the calendar. If you ship constantly or handle high-risk data, test more often. Quarterly or continuous testing is common for those teams.
Our view: once a year is the floor, not the goal.
Why Once a Year Often Isn’t Enough
A penetration test is a photograph, not a live video. It shows how things looked while the testers were working. The next day someone merges a pull request, and the photo starts going out of date.
A team that deploys weekly makes dozens of changes between annual tests. Any of them could open a hole, and nobody looks until the next round. Meanwhile, researchers keep finding new flaws in software you already run.
What Decides Your Testing Frequency?
Six things matter most.
How often you change things. A network untouched for two years is a different case from a SaaS product that deploys daily. More change means more reasons to look.
How sensitive your data is. Payment details, health records, and large amounts of personal data make a breach costlier, so they justify testing more often.
What your compliance and contracts say. Many frameworks set a minimum. PCI DSS, for example, expects penetration testing at least annually and after significant changes. SOC 2 auditors generally want regular testing as evidence that you’re watching your security. ISO 27001 expects technical vulnerability management, and testing is a common way to show it. HIPAA expects ongoing risk evaluation, and testing is a common method. Some customer contracts add their own schedule. The exact wording varies by version, scope, and auditor, so check yours.
How exposed you are. Anything facing the internet gets probed constantly. A public API deserves more attention than a system buried deep inside your network.
What’s happened before. If a past test found serious problems, or you’ve had an incident, test and retest more often until things settle.
How mature your team is. Strong secure development habits and good automated checks can mean fewer full tests. Teams still building those habits get a lot from regular outside eyes.
Moments That Should Trigger a Test
Some events deserve a test no matter what the calendar says: a new application or major release, a new API or mobile app, payments, a new login system or user roles, a cloud migration, a big infrastructure change, a significant third-party integration, a merger or acquisition, a security incident, or fixes for serious vulnerabilities from an earlier test.
Rough Guidance by Situation
Treat these as starting points. Your own risk gets the final say.
| Situation | Typical Approach |
| Small business, few changes | Annual test, plus testing after major changes |
| Growing SaaS or startup shipping often | Annual full test, plus targeted tests on major releases |
| Fintech, healthtech, or payment handling | Annual or twice-yearly full tests, plus tests after major changes |
| Large enterprise with many systems | Rolling schedule, with critical systems tested more often |
| Weekly or faster release cycle | Continuous or quarterly testing, with focused tests on new features |
| Preparing for an audit or certification | Test before the audit, then retest the fixes |
You Don’t Need a Full Test Every Time
Testing more often doesn’t mean paying for a full engagement every few weeks. Most teams do best with a mix.
A full penetration test gives you the big picture, usually once a year or at major milestones. A targeted test zooms in on one new feature after a release. Retesting checks that your fixes actually worked, and it should follow any test that finds problems. Recurring testing suits teams that release often, and vulnerability scanning fills the gaps in between by catching known issues as they appear.
Scanning vs. Penetration Testing
People mix these up, but they run on different rhythms.
| Vulnerability Scanning | Penetration Testing |
| Automated | Manual and expert-led |
| Can run daily, weekly, or continuously | Usually annual, or after major changes |
| Finds known, common weaknesses | Finds logic flaws, chained attacks, and access control problems |
| Lower cost per run | Higher cost per test |
| Good for ongoing monitoring | Good for deep assurance |
Scan often. Bring in people when it counts.
Who Should Test More Often?
Teams that release features regularly, handle sensitive data, run public-facing APIs, sell to enterprise customers who ask for recent reports, or face strict regulation. If that’s you, aim for the higher end.
Scheduling Mistakes We See
The most common one is testing only for the audit. A test done to tick a box and then forgotten protects very little.
Close behind is never retesting. If you find a problem and never confirm the fix, you’re guessing.
Then there’s testing too late. Hearing about a serious flaw a week before launch leaves no room to fix it properly.
Other frequent ones: assuming last year’s report covers this year’s features, scoping so narrowly that the API and cloud setup go untested, and treating the report as the finish line when the value is in fixing what it found.
How to Build a Testing Schedule
- List what matters most. The applications, APIs, cloud environments, and networks you’d hate to lose.
- Check your requirements. Compliance frameworks, customer contracts, and insurance conditions.
- Look at how often you ship. Your release cycle says a lot.
- Pick a baseline. For most teams, that’s an annual full test.
- Add triggers. Targeted tests after major releases and big changes.
- Plan retesting. Book verification after each round of fixes.
- Revisit it every year. Your business and risks change, so your plan should too.
Why Sunvak Boreal?
We’ll help you test at a pace that matches your risk, and we’ll say so plainly if you’re doing too much, too little, or looking in the wrong places.
Our testing is manual and expert-led, because tools help but people find the serious problems. You can mix full tests, targeted tests, retesting, and recurring programs as needed. Our reports are written so developers and executives can both follow them, and we stay with you through the fixes, not just the findings.
Final Thoughts
No single number works for everyone. Once a year is a reasonable minimum, but the right rhythm depends on how fast you change, what you protect, and what others expect from you.
A simple rule: if something significant changed, test it. If nothing changed in a year, test anyway, because the threats keep moving even when your systems don’t.
Not sure what schedule fits? Sunvak Boreal is happy to talk it through.
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FAQs
How often should you do penetration testing?
At least once a year, and after any significant change to your applications, infrastructure, or architecture. Higher-risk or fast-moving environments may need quarterly or continuous testing.
Is annual penetration testing enough?
It’s a common minimum and meets many compliance requirements. But if you release often or handle sensitive data, a yearly test can leave long stretches where new vulnerabilities go unchecked.
How often does compliance require penetration testing?
It depends on the framework. PCI DSS, for example, expects testing at least annually and after significant changes. Other frameworks and customer contracts have their own expectations, so check the ones that apply to you.
Should I test after every release?
Not necessarily a full test. For major releases or sensitive new features, a targeted test makes sense. For smaller changes, automated scanning and good development practices may be enough.
How often should startups do penetration testing?
Usually before launch or before signing enterprise customers, then annually, plus targeted tests as the product grows. Frequent releases can justify more regular testing.
How does scanning frequency differ from penetration testing frequency?
Scans are automated and can run continuously or weekly. Penetration tests are manual and go deeper, so they’re usually done annually or after major changes.
Do I need to retest after fixing vulnerabilities?
Yes. Retesting confirms the fixes work and haven’t introduced new problems.
Can I do continuous penetration testing?
Yes. Recurring or continuous engagements suit teams that release often, combining regular manual testing with ongoing coverage of new features.
What happens if I go too long between tests?
New vulnerabilities can appear without anyone noticing, and you may miss audit or customer requirements. Longer gaps mean more unknown risk.
How long does a penetration test take?
It depends on the scope, size, and complexity of what’s being tested. A scoping call helps set a realistic timeline.