The short answer, in one paragraph each
A penetration test is a human security specialist, working under a signed scope for days or weeks, who tries to break your system the way a determined attacker would: chaining findings, reasoning about your business, exploiting what they find, and writing it up formally. It is the only one of the two that satisfies an audit requirement, and it is the only one that reliably finds the clever multi-step problems. It costs thousands and it takes weeks to schedule.
An automated security check — this service — probes your live application for the failures that are common, serious and mechanically detectable: broken access control, missing data-layer rules, exposed endpoints, weak session handling, unsafe configuration, known-vulnerable components. It costs tens of euros, runs in hours, and hands you a fix prompt per finding. It does not satisfy an audit requirement and it does not replace a specialist.
Side by side, with everything we lose left in
Two rows below say no for us. They stay, because a comparison table that wins every row is one nobody believes.
| What you might do instead | Ask your coding agentCursor, Claude Code, Codex | Dependency scannerSnyk, Dependabot, npm audit | VibeGuard checkThis service | Penetration testA human specialist, by contract |
|---|---|---|---|---|
| Reads your source code | Yes | PartlyDependencies only | NoNot needed | PartlyIf you grant it |
| Tests the deployed applicationThe only place a real attacker ever meets your product. | No | No | Yes | Yes |
| Finds broken access controlOne user reaching another user's data. The most common serious flaw in AI-built apps. | PartlyOnly if you ask | No | Yes | Yes |
| Finds known-vulnerable components | PartlyIf told to look | Yes | YesWhat you expose | Yes |
| Finds business-logic abuseSkipping payment, replaying a one-time action, racing a limited resource. | No | No | PartlyDeep tier | Yes |
| Independent of what you thought to askYou cannot ask about the risk you do not know exists. | No | Yes | Yes | Yes |
| Hands you the fix | YesIt is the fix | PartlyVersion bump | YesPrompt + test | PartlyWritten advice |
| Evidence you can show a customer | No | PartlyA dashboard | YesA report | YesA formal report |
| Satisfies a formal audit requirementSOC 2, ISO 27001 and most enterprise contracts name a penetration test specifically. | No | Partly | NoNot a substitute | Yes |
| Typical cost | YesYour subscription | YesFree to cheap | Yes€59 – €199 | Yes€5,000+ |
| Typical turnaround | YesMinutes | YesMinutes | YesHours | YesWeeks |
Reads your source code
- Ask your coding agent
- YesYes
- Dependency scanner
- PartlyDependencies only
- VibeGuard
- NoNot needed
- Penetration test
- PartlyIf you grant it
Tests the deployed application
The only place a real attacker ever meets your product.
- Ask your coding agent
- NoNo
- Dependency scanner
- NoNo
- VibeGuard
- YesYes
- Penetration test
- YesYes
Finds broken access control
One user reaching another user's data. The most common serious flaw in AI-built apps.
- Ask your coding agent
- PartlyOnly if you ask
- Dependency scanner
- NoNo
- VibeGuard
- YesYes
- Penetration test
- YesYes
Finds known-vulnerable components
- Ask your coding agent
- PartlyIf told to look
- Dependency scanner
- YesYes
- VibeGuard
- YesWhat you expose
- Penetration test
- YesYes
Finds business-logic abuse
Skipping payment, replaying a one-time action, racing a limited resource.
- Ask your coding agent
- NoNo
- Dependency scanner
- NoNo
- VibeGuard
- PartlyDeep tier
- Penetration test
- YesYes
Independent of what you thought to ask
You cannot ask about the risk you do not know exists.
- Ask your coding agent
- NoNo
- Dependency scanner
- YesYes
- VibeGuard
- YesYes
- Penetration test
- YesYes
Hands you the fix
- Ask your coding agent
- YesIt is the fix
- Dependency scanner
- PartlyVersion bump
- VibeGuard
- YesPrompt + test
- Penetration test
- PartlyWritten advice
Evidence you can show a customer
- Ask your coding agent
- NoNo
- Dependency scanner
- PartlyA dashboard
- VibeGuard
- YesA report
- Penetration test
- YesA formal report
Satisfies a formal audit requirement
SOC 2, ISO 27001 and most enterprise contracts name a penetration test specifically.
- Ask your coding agent
- NoNo
- Dependency scanner
- PartlyPartly
- VibeGuard
- NoNot a substitute
- Penetration test
- YesYes
Typical cost
- Ask your coding agent
- YesYour subscription
- Dependency scanner
- YesFree to cheap
- VibeGuard
- Yes€59 – €199
- Penetration test
- Yes€5,000+
Typical turnaround
- Ask your coding agent
- YesMinutes
- Dependency scanner
- YesMinutes
- VibeGuard
- YesHours
- Penetration test
- YesWeeks
Buy a penetration test if any of these are true
- Someone is requiring it in writing. SOC 2, ISO 27001, most enterprise security questionnaires and a lot of procurement checklists name a penetration test specifically. No automated tool satisfies that clause, ours included.
- You handle money, health data or identity at scale. The expected cost of being wrong is high enough that a human should spend a week on it.
- Your system is genuinely complex. Several services, multiple tenants, background jobs, a partner API. Chained abuse paths across that surface need a person.
- You need someone accountable. A named firm, a signed report, a retest clause and professional liability behind it.
An automated check is the right call if these are true
- The honest alternative is nothing. This is the common case. A pen test is not competing for the budget because there is no budget; the choice is between a check and shipping unexamined.
- You are about to open sign-ups. You want the obvious and serious mistakes gone before strangers arrive, this week.
- An AI tool built most of it. The failure patterns are predictable, and the ones that matter are exactly what a probe against the running application surfaces.
- You want to fix things, not just know about them. A pen test hands you a report. A check hands you a report plus a prompt per finding written for the tool you build with.
- You are preparing for a pen test. Clearing the mechanical findings first means the specialist you are paying by the day spends their time on the problems only a specialist can find.
If you are going to do both, do them in this order
- Work through the free pre-launch checklist yourself. It costs nothing and removes the most likely cause of a breach.
- Run an automated check on the live application and fix what it finds. Use the included re-check to confirm the fixes actually landed.
- Then commission the penetration test, when you need it, with a cleaner system. You get more value per day of specialist time, because nobody is billing you to discover a missing security header.
If your scope is wider than a web application — infrastructure, cloud configuration, a source code review, a mobile client — that sits between the two, and it is what our custom assessment is for: our own team, scoped and quoted with you before anything starts.