Pentest Vendor

How to Choose a Penetration Testing Vendor: A 2026 Buyer's Checklist

Before you sign with any penetration testing vendor, ask six questions: How much of the test is done by a human? What is the minimum tester experience? Is a re-test included? Do you get your testers' names and a direct line? Will the report satisfy your auditor? Can you see a sample report and methodology first? Honest vendors answer all six without flinching.

The Three Types of Pentesting Vendors

Don't just hire a vendor; choose a delivery model that fits your speed.

Vendor Type

Pros

Cons

Best For

Traditional Consultancy


Deep brand name recognition (e.g., Big 4).

Slow (weeks to quote/schedule), static reporting, disconnected from developer workflows.

Legacy organizations that prioritize "brand safety" over speed or remediation.

Automated

Scanners


Instant, very cheap.

High false positives, misses business logic flaws, often rejected by auditors.

Checking a box (with low security value).

PTaaS

(Red Sentry)


Manual testing with platform speed. Faster scoping, continuous visibility, and built-in remediation workflows.

Not designed for teams who only want a brand-name report once a year or a checkbox exercise.

SaaS companies, modern enterprises, and agile teams that ship frequently and need security to keep pace.

The Three Types of Vendors

Don't just hire a vendor; choose a delivery model that fits your speed.

The Three Types of Pentesting Vendors

Don't just hire a vendor; choose a delivery model that fits your speed.

Vendor Type

Pros

Cons

Best For

Traditional Consultancy


Deep brand name recognition (e.g., Big 4).

Slow (weeks to quote/schedule), static reporting, disconnected from developer workflows.

Legacy organizations that prioritize "brand safety" over speed or remediation.

Automated

Scanners


Instant, very cheap.

High false positives, misses business logic flaws, often rejected by auditors.

Checking a box (with low security value).

PTaaS

(Red Sentry)


Manual testing with platform speed. Faster scoping, continuous visibility, and built-in remediation workflows.

Not designed for teams who only want a brand-name report once a year or a checkbox exercise.

SaaS companies, modern enterprises, and agile teams that ship frequently and need security to keep pace.

The Three Types of Vendors

Don't just hire a vendor; choose a delivery model that fits your speed.

Vendor Type

Pros

Cons

Best For

Traditional Consultancy


Deep brand name recognition (e.g., Big 4).

Slow (weeks to quote/schedule), static reporting, disconnected from developer workflows.

Legacy organizations that prioritize "brand safety" over speed or remediation.

The Three Types of Vendors

Don't just hire a vendor; choose a delivery model that fits your speed.

Vendor Type

Pros

Cons

Best For

Traditional Consultancy


Deep brand name recognition (e.g., Big 4).

Slow (weeks to quote/schedule), static reporting, disconnected from developer workflows.

Legacy organizations that prioritize "brand safety" over speed or remediation.

The Three Types of Vendors

Don't just hire a vendor; choose a delivery model that fits your speed.

If a vendor does any of these, run.

No Re-testing:

If they charge extra to verify your fixes, run. Remediation verification should be included in the cost of the pentest.

Pay-Per-Vulnerability:

This creates a perverse incentive to find junk data just to charge you.

The "Instant" Report: If they promise a full pentest report 24 hours after signing, it’s an automated scan. Human testing takes time to think, validate, and exploit.

The Red Flags

The Red Flags

If a vendor does any of these, run.

The "Instant" Report:

If they promise a full pentest report 24 hours after signing, it’s an automated scan. Human testing takes time to think, validate, and exploit.

Pay-Per-Vulnerability:

This creates a perverse incentive to find junk data just to charge you.

No Re-testing:

If they charge extra to verify your fixes, run. Remediation verification should be included in the cost of the pentest.

Certifications That Actually Matter

Certifications That Actually Matter

Certifications That Actually Matter

Company certifications prove process; individual certifications prove skill.

Company certifications prove process; individual certifications prove skill.

Company certifications prove process; individual certifications prove skill.

For the Company:

Look for certifications that show the vendor can handle your data responsibly.


SOC 2 Type II and ISO 27001 matter because they prove the company has been audited over time, not just point-in-time. They indicate mature security practices, access controls, and operational discipline.


If a vendor can’t meet basic compliance standards themselves, they shouldn’t be testing yours.

Look for certifications that show the vendor can handle your data responsibly.


SOC 2 Type II and ISO 27001 matter because they prove the company has been audited over time, not just point-in-time. They indicate mature security practices, access controls, and operational discipline.


If a vendor can’t meet basic compliance standards themselves, they shouldn’t be testing yours.

For the Hackers:

Look for hands-on offensive security certifications like OSCP (Offensive Security Certified Professional) and OSEP (Offensive Security Experienced Penetration Tester). These require real-world exploitation under time pressure, not just multiple-choice exams.


Certifications that are primarily theory-based don’t necessarily translate to finding real vulnerabilities in live environments. Ask who will actually be testing your systems and what practical credentials they hold.

Why Red Sentry?

We built the model we wanted to buy.

We combine the depth of top-tier ethical hackers with the speed of a modern SaaS platform.

Quality


Certified pros (OSCP/CISSP), no students or outsourcing.

Speed


Get a quote in hours (not weeks) and launch your test in under 48 hours.

Transparency


Watch findings appear in real-time on your dashboard.

Transparency


Watch validated findings appear in near real-time on our industry-leading dashboard.

Speed


Get a quote in hours (not weeks) and launch your test in under 48 hours.

Quality


Certified pros (OSCP/CISSP), no students or outsourcing.

Transparency


Watch validated findings appear in near real-time on our industry-leading dashboard.

Why Red Sentry?

We built the model we wanted to buy.

We combine the depth of top-tier ethical hackers with the speed of a modern SaaS platform.

Speed


Get a quote in hours (not weeks) and launch your test in under 48 hours.

Quality


Certified pros (OSCP/CISSP), no students or outsourcing.

Transparency


Watch validated findings appear in near real-time on our industry-leading dashboard.

Why Red Sentry?

We built the model we wanted to buy.

We combine the depth of top-tier ethical hackers with the speed of a modern SaaS platform.

Ready to get started?

Fill out this brief form to schedule a complimentary scoping call.

Ready to get started?

Fill out this brief form to schedule a complimentary scoping call.

What questions should you ask a penetration testing vendor

Copy and paste these into your RFP or email chain.

Copy and paste these into your RFP or email chain.

How much of the test is done by a human?

Ask what share of the work a person actually performs. A scanner can flag known issues, but it cannot chain weaknesses together or think like an attacker, and that is where real risk hides. At Red Sentry the testing is human-led: certified hackers do the work and use tools only to speed up the early reconnaissance.

What is the minimum tester experience?

A report is only as good as the person who wrote it, so ask whether junior analysts run the engagement or whether every tester is senior and certified. Red Sentry’s team holds certifications like OSCP and CREST and years of hands-on experience.

Is a re-test included after you patch?

Finding issues is half the job. You want a vendor that re-tests your fixes and confirms they worked, not one that charges extra for it. Red Sentry includes a remediation re-test and a second report so you can prove the issues are closed.

Do you get your testers' names and a direct line?

You should know who is touching your environment and be able to reach them. If your only contact is a salesperson, that is a red flag. Red Sentry gives you your testers and a dedicated project manager with direct contact, not a ticket queue.

Will the report satisfy your auditor?

A pen test usually exists to satisfy SOC 2, HIPAA, PCI DSS, or a customer's security questionnaire, so the report has to map to those frameworks and include a letter of attestation. Red Sentry reports are audit-ready and come with the attestation letter auditors expect.

Can you see a sample report and methodology first?

A vendor that will not show you a sample report or explain its methodology before you sign is hiding the work product. Red Sentry shares sample reports and a full methodology up front.