How Long Does a Startup Pentest Take?

A startup penetration test takes between 3 and 10 days of active testing at Faultline, depending on scope, plus 2 days for the report. From scoping form to actionable report in hand, most engagements complete in under two weeks.

---

TL;DR
Active testing at Faultline runs 3 to 5 days (Essentials), 5 to 8 days (Growth), or 7 to 10 days (Comprehensive). Reporting takes 2 days. Remediation and retest add 1 to 3 weeks depending on how quickly your engineering team addresses findings. If you have a compliance deadline or fundraise, start scoping at least 6 weeks before you need the final remediated report.

---

What Are the Stages of a Pentest and How Long Does Each Take?

A penetration test runs in four sequential stages, each with its own timeline:

Stage 1: Scoping (24 hours)
You define what will be tested, in which environments, at which user permission levels, and using what methodology. Fill out Faultline's scoping form and get a fixed-price proposal within 24 hours. No call required, no weeks of back-and-forth.

Stage 2: Active Testing (3 to 10 days)
Senior testers work through your application, APIs, and infrastructure methodically, documenting every finding with reproduction steps and working proof-of-concept evidence. Critical findings are flagged immediately, not held until the end. The duration depends on your package:

Stage 3: Reporting (2 days)
After testing closes, the tester writes the full report: executive summary, all findings with CVSS scores and CWE references, an attack narrative showing how vulnerabilities chain together, and remediation guidance per finding. Faultline delivers reports within 2 days of testing closing, followed by a findings walkthrough with your team.

Stage 4: Remediation and Retest (1 to 3 weeks)
Your engineering team addresses the findings. A retest confirms that critical and high vulnerabilities have been resolved and an updated report is issued, ready for your auditor. Plan for 1 to 3 weeks between receiving the report and getting your remediated report back, depending on your team's capacity. A full retest of all findings is included in the Comprehensive package. For Essentials and Growth, retesting is not included by default; you can add a full retest for +20% of the base price.

---

How Do I Know What Scope Is Right for My Stage?

If you need it for SOC 2: Your auditor needs to see that your core product environment was tested. Essentials covers your API and authentication controls, which is the minimum. If your scope must include external infrastructure or cloud configuration (for example hosting on AWS, GCP, or Azure), that maps to the Comprehensive tier, not Growth by default.

If you need it for a Series A: Investors want confidence that your product is not sitting on critical vulnerabilities. A focused Essentials test is usually sufficient. The goal is a clean, credible report, not exhaustive coverage of every integration.

If you need it for enterprise sales: Enterprise security questionnaires often ask specifically about scope. Growth or Comprehensive gives you stronger answers to their questions and covers more of what large customers ask about.

If it is your first pentest: Start with Essentials. A focused test of your highest-risk surface gives you high-value findings at the lowest cost. Broaden your scope in subsequent years as your security program matures.

---

What Slows Down a Pentest?

Several common issues extend timelines. Being aware of them lets you avoid them.

Delayed test account provisioning
Testers need accounts at each user role level before they can begin. Provision accounts before the engagement starts. If your team takes several days to set them up after kickoff, that time is lost from the testing window.

Scope creep during testing
If new systems or environments are added mid-engagement, the timeline expands. Agree on scope in writing before testing begins and stick to it. Out-of-scope additions can be addressed in a follow-up engagement.

Staging environments that do not mirror production
If your staging environment is missing features, has different configurations, or does not represent your real product, testers will find fewer real vulnerabilities or need to switch to production. Keep staging as close to production as possible.

Slow remediation
If your engineering team is mid-sprint, mid-launch, or mid-fundraise when the report arrives, remediation stalls. Align your pentest calendar with your team's capacity. The retest cannot happen until remediation is complete.

Slow communication during testing
Testers sometimes need to ask questions about application behavior or expected functionality mid-engagement. Designate a technical point of contact who can respond within a few hours during the testing window.

---

How Far in Advance Should I Book?

Faultline maintains available testing capacity, but booking ahead gives you more flexibility on start dates. If you have a hard deadline, work backwards from it.

---

Can a Pentest Be Done in a Week?

Yes, for Essentials-scope engagements. A focused test of your API and authentication layer completes in 3 to 5 days of active testing. Add 2 days for reporting and your team has a report in hand within one week of testing starting.

Compressed timelines require that everything is in place before testing starts: test accounts ready, documentation shared, scope agreed, and a point of contact available to respond quickly. Delays during a compressed engagement have an outsized impact because there is no buffer.

If you have a genuinely urgent deadline, flag it during scoping. Faultline can accommodate tight timelines for narrow scopes with enough notice.

---

Frequently Asked Questions

Can the pentest run while we are also shipping product?
Yes, with coordination. Your engineering team should be briefed that a pentest is in progress so they do not confuse test traffic with a real attack. Avoid rolling out changes to in-scope components during the testing window, as mid-engagement changes can invalidate findings.

Does the clock start from when we sign or when testing begins?
Timelines refer to active testing days, which begin after scoping is complete, the contract is signed, and test accounts have been provisioned. Time between signing and testing start is not counted as testing time.

What if we find vulnerabilities after the pentest closes?
A pentest covers the agreed scope during the agreed window. Vulnerabilities discovered after the engagement through other means (bug bounty, internal review, incident) are outside the pentest scope but should still be addressed and documented in your vulnerability management process.

Can we run the pentest ourselves to save money?
Internal assessments are valuable but do not satisfy SOC 2, investor due diligence, or enterprise security questionnaire requirements, all of which specify independent third-party testing. An external pentest is required for those use cases.

How do I know when the pentest is actually finished?
Testing is finished when the agreed scope is covered, you have received the final report and walkthrough, and you have a remediation plan. If you add a retest, the engagement ends after the retest report confirms closure of agreed findings (Comprehensive includes a full retest; Essentials and Growth can add a full retest for +20%).

---

For questions about pricing, timelines, and working with Faultline, visit our FAQ page.

---

Faultline Security specializes in penetration testing for SaaS companies and startups. Scope your engagement in 24 hours