M&A · TECH DD · VENDOR RISK

Penetration testing for due diligence and M&A.

A transaction lives or dies on trust, and security is an ever heavier part of that trust. Resync delivers a manual penetration test with a report buyers, investors and their advisors accept: CVSS-scored, mapped to SOC 2/ISO 27001/OWASP, and ready for the data room. Start within 1–2 weeks, where large firms keep you waiting for months. For the full penetration testing offering and pricing model, see the overview page.

Discuss your deadline → When do you need this?
✓ Start within 1–2 weeks ✓ A report buyers accept ✓ Fixed price ✓ Retest included
⏱ A due-diligence deadline doesn't move.

Closing dates, investment committees and vendor assessments run on fixed calendars. A missing or weak security report then stops being a detail and becomes a deal risk: delay, a lower valuation, or forced warranties. The sooner the test runs, the more time is left to remediate before the deadline.

Plan within your deadline →
When do you need this?

Four moments where a DD pentest makes the difference.

A due-diligence pentest is not a separate testing method, but a penetration test with a report tuned to the questions a transaction or assessment raises. Four situations are the most common:

Buy-side

You're acquiring a company and want to know, before signing, which technical risks you're buying. An independent pentest of the target's product exposes hidden debt before it becomes your problem.

Sell-side

You're preparing for a sale or investment. Testing your own product up front and fixing findings stops security from becoming a deal-breaker or a valuation discount during negotiation.

Funding round & investors

A VC or private-equity firm asks during due diligence for evidence that your platform is secure. A recent pentest report with a retest statement is the strongest document you can put forward.

Vendor risk assessment

A large customer or regulator requires a pentest before they sign or onboard you as a supplier. The report maps to their security questionnaire and speeds up procurement.

Scope

What Resync tests in a due diligence.

The exact scope is set during intake, based on the transaction and the risks that matter. Common components:

The application & APIs

The core of the value: web application, REST/GraphQL APIs, business logic, authorization and multi-tenant separation. OWASP Top 10 plus logic flaws.

Authentication & authorization

SSO, session management, role model and IDOR. Exactly where fast-grown products tend to be weakest, and what a buyer asks about most.

Infrastructure & cloud

External attack surface, misconfigurations in cloud environments (tenants, buckets, IAM), exposed services and secrets.

Secrets & supply chain

Exposed API keys, credentials in repositories, and reliance on critical third-party components. Material to a buyer's risk assessment.

The report

A report that fits the data room.

A DD report has two readers: the deal team making a go/no-go, and the technical team that has to remediate afterwards. The Resync report serves both, in layers:

  • Deal-team summary, one page: the risk picture in plain language, suitable for an investment committee or acquisition team
  • Risk-scored findings, with CVSS and business impact, prioritised by exploitability
  • Framework mapping, findings linked to OWASP, SOC 2 and ISO 27001 where relevant, so they match the questions in the data room
  • Remediation path, concrete recommendations written for the product, not generic links
  • Retest statement, after remediation, as formal proof the risks were actually resolved, often decisive towards a buyer or investor
See for yourself

Curious what such a report looks like? View a full sample report, available to download directly, no form. So you know in advance exactly which document you're putting in the data room.

Why Resync for due diligence

Fast, fixed-price, by one senior tester.

Start within 1–2 weeks

No queue behind an account manager. Where large firms plan 2 to 6 months ahead, I can usually start within your transaction deadline.

Fixed price, no open end

During a deal you don't want hourly billing that creeps up. You know the cost in advance. See the pricing model.

Always the same senior tester

OSCP- and eWPTxv2-certified, MSc Cyber Security. No juniors on your most sensitive file, and direct communication without a middle layer.

Confidentiality as standard

NDA standard, before a single technical detail is shared. Working discreetly inside a live transaction is the norm, not the exception.

Frequently asked questions

Questions from buyers, sellers and investors.

How quickly can you start?
Usually within 1 to 2 weeks of sign-off on the quote. Turnaround from intake to finished report is typically 1 to 3 weeks. Because I am the single senior tester running the whole engagement, with no queue, this normally fits within a closing or investment deadline. Tell me your deadline and you'll hear within one business day whether it's feasible.
Do you work for the buyer or the seller?
Both. Buy-side: technical due diligence on the target before the acquisition. Sell-side: testing your own product so security doesn't become a deal-breaker or a valuation discount. The same report also serves funding rounds and a large customer's vendor risk assessment.
Which frameworks does the report cover?
Findings are CVSS-scored and, where relevant, mapped to OWASP, SOC 2 and ISO 27001. That way the report drops straight into a security questionnaire or the questions a technical advisor asks in the data room, with nothing to translate.
What if the product isn't "finished"?
With fast-grown scale-ups that's the rule rather than the exception, and exactly why testing helps. The report describes not just the findings but the remediation path and priority. In a sell-side process you can fix the key items before the deadline and use the retest statement to prove they're resolved.
How do you handle confidentiality in a live deal?
An NDA is signed as standard before any technical detail is shared. Work is done discreetly, preferably in a staging environment, and all data fragments are demonstrably destroyed afterwards. Communication runs directly with me, not via a team.
What does a due-diligence pentest cost?
A fixed price based on scope, like every pentest at Resync. Most DD engagements fall in the Standard or Extensive category, but the exact scope sets the price. After a short intake you'll usually get an indication within one business day. See the pricing model for the scope categories.

Deadline in sight? Let's make it.

One conversation about scope, deadline and the shape of the report. Fixed-price quote within one business day, start within 1–2 weeks, retest included.

Discuss your deadline → See the pentest offering
✓ Start within 1–2 weeks ✓ Fixed price ✓ Retest included
Related

Other pages & services

SERVICE · PENTEST

Penetration testing services

The full offering: scope categories, process and pricing model.
REPORT · SAMPLE

Sample pentest report

See exactly which document you put in the data room, download directly.
SERVICE · WEB APP

Web application pentest

OWASP, business logic and API abuse, the core of most DD scopes.
Discuss your deadline →