PTaaS vs traditional penetration testing

When to choose PTaaS and when to choose traditional penetration testing

Choose a platform-delivered model when your evidence needs are continuous and your team needs to act on findings while the test is still running. A PTaaS platform typically gives you live findings, on-demand retests and ticketing integrations, so remediation work flows into the systems your engineers already use. That suits a team with a steady release cadence, a named internal owner for triage, and a need to show that fixes were retested. Choose a consultancy engagement that ends in a written report when the deliverable itself is the evidence: a fixed scope, a defined methodology, a named lead tester, and a document an assessor or board can read end to end. Ask each vendor to confirm how tester continuity is handled across phases and whether the report meets the reporting content your assessor expects.

The two models combine well. A common pattern is an annual, scoped test delivered as a traditional engagement with a formal report, paired with a platform between cycles for retests and newly exposed assets. NIST SP 800-115 notes that organizations often combine techniques to reach an in-depth assessment at an acceptable level of risk, and the OWASP Web Security Testing Guide recommends a mix rather than a single technique. The key check is that the platform does not become the only record. Confirm who signs off on the final evidence, where test artifacts are stored, and how long they are retained, since PCI DSS requirement 11.4.1 sets a retention period for penetration testing results and remediation records.

Cadence alone does not decide this choice. A monthly platform test can still produce weak evidence if scope is thin, and an annual engagement can be strong if the scope and methodology are sound. Before you shortlist vendors, write down three things: which assessor or regulator will read the output, which systems and data the test touches, and who in your organization will act on findings within the week. Those answers point to the right model more reliably than how often you want to test. Ask both delivery types for a sample report and a sample platform export, and compare them against your assessor's expectations rather than against each other.

How PTaaS and traditional penetration testing differ across delivery, evidence and data

This table compares a platform-delivered penetration testing service with a consultancy engagement that ends in a written report, row by row across goal, delivery, retesting, tester continuity, auditor evidence, data handling and client effort. Read each row as a question to put to both vendors, since the platform layer changes how findings and retests arrive but does not by itself change how much manual testing is performed.

Dimension	PTaaS (platform-delivered)	Traditional penetration test (consultancy report)
Goal	Ongoing or repeated exposure reduction with findings tracked across releases	A point-in-time assessment of defined scope, closed by a report
Scope setting	Often set through a platform order form or subscription, with scope changes handled inside the platform	Set in a written statement of work and rules of engagement, typically agreed before testing starts
Method at a buyer's level	Manual testing is still the core method if the provider is qualified. Confirm how much is manual versus tool-driven, since NIST SP 800-115 does not endorse one methodology over another	Usually manual-led with tools in support. Ask the provider to disclose methods, as OWASP ASVS 5.0.0 expects methods to be stated in the report
Delivery of findings	Live findings visible during the engagement, with ticketing integrations for routing to engineering	Findings delivered mostly in the final report, sometimes with interim briefings or a shared spreadsheet
Retesting	On-demand retests are usually part of the platform model. Confirm whether retest counts or windows are limited	Retests are usually a separate, scoped piece of work, quoted and scheduled after the report
Tester continuity	Confirm whether the same testers return across engagements, since a platform may route work to a pool of testers	Often the same named team across the engagement, with continuity depending on the firm's staffing
Report evidence for auditors	Confirm whether the platform export includes scope, methodology, limitations and tester identity in a form an assessor accepts	A formal written report, which PCI SSC's suggested outline describes in detail, is usually the expected artifact
Data handling	Findings and evidence sit in the provider's platform. Confirm where data is stored, who can access it and how long it is retained	Evidence is typically delivered as files under the engagement terms. Confirm storage, encryption and destruction at close
Cost model	Typically a subscription or platform fee, with testing effort bundled. Ask which retests and additional scope are included	Typically a quoted fixed-scope fee per engagement, with retests and extensions priced separately
Client effort	Lower effort to route and track findings, but triage, scope upkeep and integration setup still fall to the client	Higher effort at the start to write scope and rules of engagement, and at the end to plan remediation from the report

What each model finds and what it tends to miss

Both models can find serious issues, but they surface different things at different times. The gaps below follow from when testing happens, how much context the tester gets and whether anyone retests after changes. CIS Controls 18.4 asks that security measures be validated after each test, so the questions to ask a provider are about coverage between and after engagements, not only during them.

Findings during the test window

A consultancy engagement usually concentrates effort into a fixed window and ends with a written report, so findings often arrive in a batch at the close. A PTaaS platform can surface validated issues while the test is still running, which gives your team time to fix or compensate before the window ends. Check whether the platform shows live status and whether the report still covers the same scope as the window. Ask how many hours of active testing each model includes, and how scope changes mid-window are recorded.

Chained attack paths

Attack paths join several low-severity weaknesses, such as a misconfigured service account, an exposed internal host and a weak trust relationship, into one route to a critical asset. Experienced testers building these chains need time, context and the freedom to pivot, which favors a dedicated engagement with a named team. A platform can record each step, but it may not follow a path beyond the defined tasks. Ask each provider to show how chains are documented and whether the report explains each step.

Business logic flaws

Logic flaws, such as a discount that stacks incorrectly or an approval step that a user can skip, do not match a scanner signature, and automated tooling rarely finds them. Consultancy testers who learn the business process can probe these cases directly, while platform-led tests depend on how much process context the provider receives during scoping. Confirm that the pre-engagement questionnaire covers workflows, roles and transaction limits, and that the tester who runs the test has read that material.

Findings between test cycles

New weaknesses appear between annual or quarterly tests as code ships, configurations drift and new internet-facing services go live. A PTaaS subscription can run more frequent tests and track these as they arrive, while a traditional engagement leaves the gap until the next scheduled window. Neither model replaces ongoing scanning. Ask whether either model covers scanning and asset discovery between tests, and who triages those results.

Changes made after the engagement closes

Fixes and new releases after a test can reopen the same attack paths, which a report written at closure does not reflect. Platforms that offer on-demand retests can confirm whether a remediation holds, and that evidence is what CIS Controls 18.4 is after when it asks for detections to cover the techniques the testers used. Ask each provider what a retest costs in effort, how long it takes to schedule and whether retested findings are reported with the original evidence.

What you receive from each model and what auditors will ask to see

This table compares the deliverables a buyer typically receives from a PTaaS subscription and from a traditional consultancy engagement, and the evidence an assessor will look for in each. Use it to write the deliverables into the statement of work, because the two models differ more in what is delivered and retained than in how the test is run.

Deliverable or evidence item	PTaaS platform	Traditional consultancy engagement
Final report with scope, methodology and limitations	Usually generated from the platform, often with a standard template. Confirm whether the methodology section and stated limitations are written per engagement.	Written per engagement, typically as a PDF. Confirm the methodology is disclosed as the PCI SSC outline expects.
Live findings records during testing	Findings appear in the platform as testing proceeds. Confirm whether draft findings are visible before the final report is issued.	Usually delivered at the end, sometimes with interim updates by email or call. Confirm the interim reporting cadence in writing.
Ticket exports to your tracker	Often offered through integrations or export. Confirm which fields export, such as severity, affected asset and status.	Typically handled by the client, who copies findings from the report into their own tracker.
Retest confirmation	Retests may be requested on demand within the subscription. Confirm the retest terms, evidence format and whether retests are reflected in the report.	Retests are usually a separate scoped engagement with a new report or addendum. Confirm the fee and timing in the quote.
Severity derivation	Confirm how the platform assigns severity and whether CVSS base scores are used and adjusted for your environment with traceable reasoning.	The report should explain how severity was derived, typically from CVSS, and any environmental adjustments. Confirm this is included.
Findings references (CVE and CWE)	Confirm the platform records CVE and CWE references for each finding, where applicable.	Commonly included in the findings section. Confirm the reference format in the report template.
Tools used and environment clean-up	Confirm which tools the platform and testers used and how test accounts, payloads and temporary changes are removed.	Usually listed in the report appendix. Confirm the clean-up confirmation is written into the closing deliverables.
Evidence retention period	Confirm how long findings, retest records and reports are retained and how you export them. PCI DSS 11.4.1 requires penetration testing and remediation results to be retained for at least 12 months.	Ask who keeps the working papers and for how long. Retain the signed final report and retest records in your own evidence store.

Which report evidence auditors accept from a platform and from a written report

Auditors judge the evidence in a penetration test, not the channel that delivered it. A platform dashboard and a PDF can both satisfy an assessor if they show the scope, the method, the identity and skill of the testers, traceable severity reasoning and results that are kept on record. The PCI SSC guidance asks for a report with an executive summary, a statement of scope, a methodology and limitations section, a testing narrative and findings that reference identifiers such as CVE and CWE. Before you sign, check whether a platform export can carry each of those elements, or whether you will need a finalized report generated from it.

Three requirements deserve specific checks. PCI DSS requirement 11.4.1 requires penetration testing results and remediation activity results to be retained for at least 12 months, so confirm who holds the records, how they are exported and whether the vendor's retention period matches yours. OWASP ASVS 5.0.0 expects testers to disclose their methods in the report, so ask whether the platform's test library is named in the deliverable. On tester skill, PCI SSC lists OSCP, GIAC certifications such as GPEN and GWAPT, CREST penetration testing certifications and CHECK as indicators, but states that it does not validate them and that certifications alone do not establish experience. Ask for named testers, their relevant experience and how continuity is handled.

Confirm the acceptance question in writing with your assessor before you sign, not after the test. Ask whether they accept a platform export, a signed PDF or both, which report sections they require, and how they want severity derived (for example, CVSS base scores adjusted for your environment with the reasoning written down). Get the answer in the statement of work or an email from the assessor. If they decline the platform format, the cost of a second report falls on you, and that cost is easier to negotiate before the engagement starts.

Which model fits each team situation

When scope is stable and an assessor expects one dated test per year, a traditional engagement usually fits better. The tester scopes the environment once, works through a defined window, and delivers a written report that the auditor can map to the testing requirement. The report becomes the primary evidence artifact, so its structure matters more than the speed of findings.

Evidence shape: A single signed report with scope, methodology and limitations is easy for an assessor to accept as a point-in-time record.
Stable scope: If the asset list changes little between years, the scoping cost recurs at a predictable level.
Retention: Confirm how long results and remediation records must be kept, since PCI DSS requirement 11.4.1 sets a minimum of 12 months for penetration testing and remediation results.
When a platform wins: If the auditor also wants ongoing evidence of remediation between tests, a platform with retest history can reduce the gap between reports.
Tester qualifications: Ask for named testers and their credentials, since certifications alone do not establish experience.

Confirm with the assessor which report elements they require, whether methodology must be disclosed, and whether a platform's output is accepted as the testing record.

What drives cost and effort in each model

Both models bill for testing time, but they spread cost differently. A consultancy engagement usually bundles the work into one per-engagement fee and a written report, while a PTaaS subscription or retainer charges recurring access and often separates retests and triage. Use the cards below to see which inputs move the price and effort, then ask every bidder to price them the same way.

Scope size and target count

Scope is the largest single driver in both models. A traditional engagement is usually priced against the agreed list of hosts, applications and environments, while a PTaaS subscription may price by asset count, test hours or a fixed number of engagements per term. Ask each vendor to state what counts as one target, how new subdomains or hosts discovered mid-test are priced, and whether unused capacity rolls over. The one-time setup cost of defining scope is paid once; the recurring cost is the set of targets you keep in the platform.

Authenticated access and roles

Each user role you want tested, such as customer, administrator or partner, adds test cases and often requires separate accounts, seeded data and setup time. In a consultancy model this lands in the day rate or fixed fee; in a platform model it may appear as an add-on per role or per application. Ask whether test accounts are provisioned by you or by the provider, who maintains them through identity changes, and how credentials are handled during the engagement.

Retest rounds

Retests confirm that fixes work, and their cost depends on how the vendor counts them. Consultancies often include one retest window in a fixed fee and bill extra rounds separately, while PTaaS platforms may offer on-demand retests within a subscription. Ask how many retest rounds are included, how long the window stays open after the report, whether a retest can be run on a single finding, and whether it generates a new report version.

Report deliveries and evidence formats

A traditional engagement produces one formal report, and extra versions, executive summaries or evidence packs for different auditors may be billed as additional work. A platform usually delivers live findings continuously, so the recurring cost shifts to the time your team spends exporting and reconciling records. Ask how many formal report deliveries are included, whether auditor-specific formats cost extra, and how long the vendor keeps findings and remediation records available to you.

Internal triage and ticketing effort

A PTaaS subscription lowers the cost of getting findings, but it can move work onto your side. Your staff must deduplicate, validate and assign findings, and a ticketing integration removes manual copying only if the field mapping is set up correctly. Ask who performs triage, whether the provider validates severity before publishing, which ticketing systems are integrated, and whether integration build time is included in the subscription or billed as project work.

Change frequency and retainers

Systems that change often need more testing cycles, and that cost recurs. A scheduled penetration test prices each cycle as a new engagement, so frequent releases can multiply fees and scheduling overhead. A platform or retainer spreads cost over time but may cap the number of tests in a term. Ask what triggers a new test, whether major releases are covered by the subscription, how the contract handles scope changes mid-term, and what the notice period is for ending or changing the agreement.

How to run a PTaaS engagement so the evidence holds up

This sequence sets scope, tester accountability, ticket flow, retest standards and record keeping before the first test begins, so the findings, retests and reports can be presented to an assessor or auditor later.

Agree written scope and rules of engagement
Before any testing, the security owner and the provider agree in writing on targets, IP ranges, application versions, test windows, permitted techniques, out-of-scope systems and emergency contacts. NIST SP 800-115 includes a rules of engagement template in Appendix B that teams can adapt. The step is complete when both parties sign the document and the platform's target list matches it exactly.
Confirm tester identity and continuity
Ask the provider to name the testers who will work the engagement, state their qualifications, and explain how a change of tester is handled during the work and on retests. Ask whether the same people will perform retests. PCI SSC guidance notes that certifications alone do not establish experience, so request evidence of relevant work as well. The step is complete when the named team and replacement rules are recorded in the contract or statement of work.
Set the findings-to-ticket workflow
Agree with the engineering team how each finding becomes a ticket: which tracker receives it, which fields are required (affected asset, reproduction steps, severity basis, owner), how the provider's integration maps status changes, and who triages disputed findings. Confirm which integrations the platform supports and whether they are native or require custom work. The step is complete when a test finding flows into the tracker end to end and the mapping is documented.
Define retest acceptance criteria
Decide in advance what counts as a fixed finding: a retest that no longer reproduces the issue, a compensating control reviewed by the tester, or a documented risk acceptance signed by an accountable owner. Record which party decides closure and how disputes are escalated. Ask the provider whether retests are included in the scope. The step is complete when the closure rules are written into the engagement record and the team knows who signs off.
Retain results and remediation records
Store the findings, evidence, retest outcomes, ticket history and any risk acceptances in a location the organization controls, with access logs. PCI DSS requirement 11.4.1 requires penetration testing results and remediation activity results to be retained for at least 12 months, so confirm your retention rule against your own obligations. The step is complete when a designated owner can produce the full record for any finding on request.
Confirm report content with the assessor
Before testing begins, share the report outline with your assessor or auditor and ask them to confirm what they need: scope statement, methodology, limitations, findings with CVE and CWE references, how severity was derived, tools used and environment clean-up. OWASP ASVS 5.0.0 expects testers to disclose their methods in the report. The step is complete when the assessor's written confirmation is filed with the engagement record.

Questions buyers ask before choosing PTaaS or a penetration testing consultancy

Does PTaaS replace a penetration test for PCI DSS?

Not by itself. A platform is a delivery model, and PCI DSS compliance depends on whether the penetration test meets the requirement, regardless of how the findings are delivered. The PCI SSC guidance states that simply running an automated tool does not satisfy the penetration testing requirement, so the buyer should confirm that the platform provider uses a qualified manual testing team, a documented methodology and a report that covers scope, method, limitations and findings. Ask your Qualified Security Assessor how they expect the evidence to look before signing. Also confirm that PCI DSS requirement 11.4.1 retention of results and remediation records for at least 12 months is supported in your storage and export process.

What drives the cost of PTaaS or a penetration test, and how do I compare quotes?

Cost depends on the size and complexity of the target, the number of applications and networks in scope, the level of access given to testers, the number of retests, and whether the work is a single engagement or an ongoing subscription. Quotes that look similar can cover different work, so compare them line by line: which environments are included, whether retests are inside the fee, how findings are triaged and whether the report and evidence exports are included. Separate one-time costs (initial test, onboarding, scoping) from recurring costs (subscription, retest allowances, platform access). DeployOpen does not publish a price list, and fees follow from a written scope.

How long does a penetration test engagement take in our environment?

Duration depends on the number of targets, how much access testers receive, how quickly your team can answer questions and provision accounts, and how many retest cycles follow. A subscription platform can start faster on a known target set, while a consultancy engagement usually fixes its window in the statement of work. Ask each provider for a timeline tied to your scope document, including scoping, testing, reporting and retest windows. No duration is given here because timelines depend on your environment and must be confirmed in writing before work starts.

What does the testing work need from our team?

Expect to supply named contacts, network and application access, test accounts at agreed privilege levels, architecture diagrams, asset inventories and a change window for any production testing. Your team also needs to triage findings, assign remediation owners and confirm fixes for retests. The NIST SP 800-115 rules of engagement template is a useful starting point for agreeing these responsibilities in writing, including emergency contacts and what happens if a tester causes an outage.

Can we run penetration testing in-house instead?

Yes, but the answer depends on whether your team has the skills, time and independence to run the work and to produce a report auditors accept. Penetration testing uses real exploits against production systems and carries high risk, so an in-house team needs strong rules of engagement and clear separation from the people who build and operate the system. PCI SSC guidance lists OSCP, GIAC certifications such as GPEN and GWAPT, CREST penetration testing certifications and CHECK as indications of tester skill, while noting that certifications alone do not establish experience. Check what your auditors will accept for independence before deciding.

How do PTaaS providers handle tester continuity and data handling?

Ask who the testers are, whether the same people stay on your engagement across retests, how they are vetted, and what happens when a tester leaves. Continuity matters because retests are faster when the tester understands earlier attack paths. On data handling, ask where findings, evidence, credentials and screenshots are stored, which countries host them, who can access them, how long they are retained and how they are deleted. Confirm these points in the contract and data processing terms, since a platform adds a hosted repository that a consultancy report usually does not.

Can PTaaS and a penetration testing consultancy be used together?

Yes. Many teams use a scheduled consultancy test for a deep, independently scoped assessment and a platform for continuous coverage between those tests, retests and ticket flow into their issue tracker. NIST SP 800-115 notes that organizations often combine techniques to reach an in-depth assessment at an acceptable level of risk, and suggests regular scanning interspersed with periodic penetration testing. Decide which work each model owns, who signs off the final report and how evidence from both is kept for auditors.

How DeployOpen scopes, delivers and supports penetration testing

DeployOpen is a Chainscore Labs company that runs security testing inside the client's own infrastructure, including penetration testing. We agree scope, deliverables and timelines in writing before work starts, then document results and hand them over so your team can act on them with or without a platform.

How we scope

Most engagements are fixed-scope, with targets, access and deliverables agreed in writing before testing begins.
Written scope should name the in-scope systems, test windows, authentication levels and any production constraints.
Ask us to state whether the work is a single point-in-time test or a recurring cycle with a retainer.

How we build

Testing runs against your environment, whether in your cloud accounts, data centers or air-gapped networks.
Methods are disclosed in the report, combining manual testing with automated tools rather than tool output alone.
Findings are validated by a tester before they are recorded, so severity and reproduction steps can be traced.

How we hand over

Deliverables include a written report with scope, methodology, limitations, findings and remediation guidance.
Ticket exports or integration with your tracker can be agreed in the scope if your team needs them.
Confirm with your auditor which report elements and retention periods they require before the engagement starts.

How we support

Ongoing support, retests and continuous testing are available as retainers on top of a fixed-scope engagement.
Retesting after remediation can be written into the scope so closure evidence is produced under the same method.
DeployOpen prepares evidence for compliance assessments, but independent auditors issue any audit reports or attestations.