Private Equity/Govern

Pen tests. Active attacks. Deal timelines. We fix what's broken.

Multiple PE-backed companies needed security work done fast — pen test remediation, vulnerability assessments, credential hardening, DDoS mitigation, and a zero-downtime cloud migration. All under deal or audit pressure.

Client
PE Portfolio Companies
Engagement
Multiple engagements
Focus
Security & Compliance
Compliance
HIPAA, SOC 2
Security hardening and compliance remediation across PE portfolio companies

01

The work

Multiple private equity-backed companies across healthcare, benefits administration, and proptech. Each facing security and compliance requirements tied to due diligence, audits, or active threats — on platforms serving millions of members and processing sensitive financial and health data.

What was getting in the way

  • Pen test findings blocking a deal. The internal team didn't have the capacity or expertise to remediate before the compliance deadline.
  • A separate company needed a full vulnerability assessment before an acquirer's technical team started reviewing their systems.
  • Multiple TPA platforms storing passwords in plain text. HIPAA violations sitting in production, serving millions of members.
  • An active DDoS attack hitting payment links on a member portal. Revenue collection and member access down.
  • A proptech company needed to migrate from AWS to Azure — lower costs, better security — without any downtime on a live platform.

02

What changed

Scope it tight. Fix what matters. Document everything.

Each engagement started with the specific risk event: a pen test report, an upcoming diligence review, an active attack, a migration requirement. We scoped remediation to the timeline and the threat, not a generic security assessment.

03

What we built

For the pen test and vulnerability work, we prioritized by severity and deal impact, remediated the findings, and delivered audit-ready documentation that satisfied compliance reviewers. For the credential issues, we eliminated plain text passwords, implemented secure hashing, and rolled out MFA across affected platforms.

The DDoS response was immediate — identify the attack vector, mitigate, restore service, protect against recurrence. The AWS-to-Azure migration was planned and executed with zero downtime, improving security posture while cutting infrastructure costs. Every engagement delivered the technical fix and the paperwork to prove it.

Security RemediationComplianceCloud MigrationInfrastructure

04

How it works

  • PE portfolio companies cleared audit and compliance requirements within deal timelines
  • Full vulnerability assessment completed and remediated before due diligence exposure
  • Plain text passwords eliminated across multiple TPA platforms. MFA deployed. HIPAA credential requirements met.
  • Active DDoS attack mitigated. Member portal and payment processing restored without data loss.
  • AWS to Azure migration completed with zero downtime and reduced infrastructure costs
  • Audit-ready documentation delivered alongside every technical remediation

05

Business impact

engagements
5
engagements
Pen test remediation, vuln assessment, credential hardening, DDoS response, cloud migration
downtime
0
downtime
AWS to Azure migration executed with zero service interruption
audit pass rate
100%
audit pass rate
Every remediation cleared compliance within the deal timeline
“We had pen test findings that needed to be resolved before the deal could close. AppStream got it done on our timeline, not theirs.”
Operating Partner, PE Firm

06

What’s next

Security work that can't wait

If you have pen test findings, an audit deadline, or an active threat and need it handled now, we've done this across multiple PE portfolio companies.

Team

  • Justin TannenbaumSolutions Architect
  • Lukasz ChmielewskiLead Engineer
  • Bartek BienkowskiDevOps & Security
  • Piotrek SzyperskiEngineering

Stack

Azure · AWS · .NET · SQL · WAF