Penetration Testing Services in New York, NY
New York is the toughest pentest buyer's market in the country. Fintech, ad-tech, agency holding companies, hedge funds, and a relentless stream of SaaS founders all share one requirement: the report has to survive the most cynical security reviewer in the building. Agency-grade vendor security reviews and institutional investor diligence are not pro-forma here — they are an actual technical bar.
Why New York buyers choose QUANT LAB USA
QUANT LAB USA runs senior, founder-led pentests for NYC clients where the report is going to be read line-by-line. Web application, network, AD, and MITRE ATT&CK-aligned engagements with formal deliverables that drop directly into agency-grade vendor security review and institutional investor due diligence templates. No padding, no junk findings.
Scope & coverage
Four engagement types cover most of what New York clients ask for. Web application pentests — OWASP Top 10, business logic, authentication, authorization, and API security across REST and GraphQL. Internal network and Active Directory engagements — Kerberoasting, AS-REP roasting, lateral movement, ADCS abuse, and credential dumping from an assumed-breach starting position. External perimeter assessments — attack surface mapping, exposed services, and credential exposure. Wireless engagements — corporate Wi-Fi, guest network isolation, and BYOD segmentation.
Every technique used is mapped to a MITRE ATT&CK ID so your detection team — in-house or MSSP — can see what your defenses caught and what they missed. Reports include the executive summary, full technical narrative, evidence chain, and a remediation roadmap prioritized by exploitability rather than CVSS alone.
The local angle
For NYC fintech and brokerage-adjacent clients, scope usually combines a credentialed web app and API test against the production application with an internal AD review — the two surfaces an institutional investor security reviewer will probe first.
Deliverables
- Full written report — executive summary, technical narrative, evidence chain
- Every finding mapped to MITRE ATT&CK technique IDs
- Proof-of-compromise screenshots and command history for critical issues
- Prioritized remediation roadmap ordered by exploitability, not CVSS alone
- Debrief call with your security and engineering leads
- Retest of critical findings after remediation (included in most scopes)
- Attestation letter for SOC 2, PCI, HIPAA, or vendor-review needs
Reference engagement
See our Multi-Strategy Trading System for a representative engagement. An in-house trading system we built and ran — the same threat model we apply to NYC brokerage-adjacent engagements.
FAQ — New York engagements
Can you support institutional investor due diligence?
Yes — reports include the executive summary, methodology, MITRE ATT&CK mapping, attestation letter, and architecture diagrams that institutional investor security reviewers and outside counsel expect.
Will your report survive an agency-grade vendor security review?
Yes. NYC agency and holding company security reviewers are some of the most cynical in the industry. Reports are evidence-backed line by line — proof of exploit, screenshots, payloads, every finding.
Do you fly in for kickoffs and reviews?
For engagements above a certain scope, yes. Discovery and reporting are remote-default; on-site is available for executive briefings and trading floor walkthroughs.
Related pages
Penetration Testing — Service Spine
The parent service page — full scope, methodology, and toolkit.
Chicago, IL Pentests
Trading firm and finance enterprise engagements.
Charlotte, NC Pentests
Banking-grade vendor reviews.
Multi-Strategy Trading System
An in-house trading system we built and ran — the same threat model we apply to NYC brokerage-adjacent engagements.
Ready to scope a New York pentest?
Book a scoping call. We will walk through rules of engagement, environment, and pricing in one conversation.
Or talk to us directly: (770) 652-1282 · beltz@quantlabusa.dev