Cybersecurity due diligence before the risk prices the deal.
Cybersecurity due diligence tells you whether a target's security posture is an asset, a liability or a renegotiation. StackUp assesses data security and privacy as a core category of every review, independent, benchmarked and documented within 48 hours, so security risk is priced into the deal, not discovered after it.
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Security exposure identified
$390,000
- HighNo MFA on admin access to production$140K
- HighCustomer PII in unencrypted backups$115K
- MediumIncident response plan never tested$85K
- Quick winMap data flows before close$50K
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The exposure
What cybersecurity due diligence must uncover
Breaches inherited in an acquisition are still your breaches. The question is not whether the target has ever been attacked, it is whether their posture and practice would survive being yours.
Posture: controls, data and access
The measurable half of security: who can access what, how data is protected at rest and in transit, whether backups exist and restore, and whether the organisation could detect and respond to an incident. StackUp scores data security and privacy as one of its eight core categories, benchmarked against best practice and peers.
Practice: how security actually operates
Controls decay without practice, policies staff follow, awareness that holds under pressure, vendors held to your standard, and a compliance posture that matches customer promises. StackUp assesses both halves as part of a full tech due diligence, and its standing framework extends the same lens to vendor due diligence after close.
How it works
Three steps to a security view you can price
Assess
Evidence from the people who run it.
- Structured security assessment, under 30 minutes
- AI calling agents surface real day-to-day practice
- No scanners to deploy, no access to negotiate
Understand
Posture scored, exposure priced.
- Security posture benchmarked against peers
- Each exposure sized in dollars against the deal
- Plain-language findings a deal team can act on
Decide
Terms that reflect the security reality.
- A defensible security view for negotiation
- Day-one remediation priorities, already ranked
- Track the fix post-close on the platform
Why StackUp
Security diligence without a six-week testing calendar
An independent, function-wide security read at deal speed, pairing cleanly with penetration testing where the deal demands it.
A traditional security review
- Weeks of scoping before the work starts
- Deep but narrow: one system at a time
- Findings written for engineers, not deal teams
- Costs that only the largest deals can justify
StackUp
- Security posture scored across the whole function
- Findings in plain language, sized in dollars
- A documented baseline within 48 hours
- Pairs with penetration testing where warranted
Reviews
What investors say about security clarity
Deal makers on knowing the security position before it became a negotiation.
Enabled us to approach future investment discussions with confidence.
Not only saved us significant effort and costs but also ensured we had the insights needed to confidently move forward in our deal process.
StackUp is your secret weapon for staying ahead.
Proof
Security questions answered before close
Real engagements where independent assessment put risk on the table at deal speed.
Investor accelerates technology due diligence without cutting corners
Inside an eight-week diligence window, this PE investor had an independent baseline, security posture included, within 24 hours, and pointed its advisors only where the risk was.
"We didn't want to replace our advisors. We just didn't want to spend three weeks figuring out what existed before we could talk about what actually mattered."
CEO gains independent visibility without undermining their CTO
A scaling SaaS CEO used the same assessment for standing security visibility, proof the deal-room lens works just as well as an operating discipline.
"For the first time, I wasn't translating technology updates. I had my own view."
FAQs
Cybersecurity Due Diligence questions, answered
What is cybersecurity due diligence?
Cybersecurity due diligence is the assessment of a target company's security posture, data protection practices and incident readiness before an investment or acquisition. Its purpose is to establish whether security weaknesses exist that should change the price, the terms or the integration plan, before the acquirer inherits them.
How is it different from a penetration test?
A penetration test probes specific systems for exploitable weaknesses; cybersecurity due diligence assesses the whole security function, controls, data handling, policies, people and vendors. StackUp delivers the function-wide view within 48 hours and shows where deeper technical testing is actually warranted, so pen-test budgets go where the risk is.
What security red flags matter most in a deal?
Missing MFA on privileged access, sensitive data unencrypted at rest or in backups, incident response plans that exist on paper but have never been tested, security awareness that stops at the IT team, and vendors with access but no security obligations. Each is common, findable and priceable before close.
How fast can cybersecurity due diligence be completed?
With StackUp, the target's leadership completes the structured assessment in under 30 minutes and the deal team has a documented, benchmarked security baseline within 48 hours. That fits inside even a compressed exclusivity window, and one PE engagement had its baseline in 24.
What happens after the deal closes?
The diligence baseline becomes the remediation plan: prioritised security actions with owners, timelines and tracking, plus ongoing reassessment so the board can watch posture improve. The same framework then extends to continuous vendor due diligence across the merged supplier estate.
Price the security risk before you sign
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