Penetration Testing in St. Louis, MI
Human-led penetration testing for St. Louis businesses and the systems they run on. Fixed price, audit-ready reports mapped to ISO 27001, and a free remediation retest.
What a penetration test is really for
CyberFortify runs manual web, API, network and cloud penetration tests for St. Louis organizations, with findings mapped to ISO 27001 and the other frameworks Michigan businesses answer to.
A scanner produces a list. A penetration tester produces a path — the specific chain of steps that turns a minor flaw into a breach. Organizations in St. Louis in Gratiot County operate within Michigan’s economy of automotive and mobility, advanced manufacturing and healthcare, and the systems that run that work — customer portals, payment flows, internal networks and the cloud behind them — are exactly what CyberFortify is engaged to test.
Businesses in St. Louis carry the same exposure as their larger peers elsewhere, often with leaner security teams. Broken access control, authorization logic that trusts the client, and segmentation that exists on a diagram but not in the routing table are the findings that recur — and the ones no scanner reports.
The threats facing St. Louis organizations
Michigan’s economy is not one thing, and neither is its risk. These are the sectors we most often test for St. Louis organizations, and what an attacker goes after in each.
Automotive and mobility
Automotive manufacturers, suppliers and dealer networks span plant-floor OT, connected-vehicle data and dealer systems holding customer finance information. ISO/SAE 21434 and UNECE R155 now set expectations for cybersecurity across the vehicle lifecycle and its supply chain.
We test the manufacturing environment and its IT boundary, the platforms and APIs handling connected-vehicle and customer data, and the dealer-facing systems where personal and financial information concentrates.
Manufacturing
Manufacturers increasingly run converged IT and operational-technology networks, where a phishing email that lands in the front office can end up on the plant floor. Downtime is measured in lost production, and ransomware operators know it — manufacturing is among the most-targeted sectors for exactly that reason.
We test the corporate network and the boundary between it and the OT environment, following the paths an attacker would use to move from email to ERP to the systems that control production, with safety and uptime treated as hard constraints.
Penetration testing services for St. Louis
Pick the services that match your exposure; most St. Louis clients run two or three together in one engagement.
Web Application Penetration Testing
Authenticated testing that finds what an attacker with a valid login could reach.
API Penetration Testing
Object-level authorization, token scope and mass assignment across your endpoints.
Network Penetration Testing
External perimeter and internal Active Directory, tested the way an intruder moves.
OT & ICS Penetration Testing
Where a compromised business network reaches equipment that moves the physical world.
Cloud Penetration Testing
The metadata-service, role-assumption and public-bucket mistakes attackers hunt for.
Mobile Application Penetration Testing
iOS and Android against OWASP MASVS, client and backend both.
Evidence for the frameworks Michigan businesses answer to
Given Michigan’s automotive and mobility, advanced manufacturing and healthcare, these are the frameworks a St. Louis engagement most often produces evidence for. One test, evidence for all of them.
How a St. Louis engagement runs
The same sequence every time, so the result is defensible.
Testing aligns to PTES and NIST SP 800-115, application work follows OWASP, and exploitation maps to MITRE ATT&CK. Automated tooling enumerates the surface; a named tester confirms every finding by hand.
Findings your team can fix and your auditor accepts
Every finding is reproducible, scored in context, and tied to the control it defeats.
The example alongside is illustrative — not from a client engagement — to show how each issue is documented and mapped to ISO 27001 and the standards Michigan organizations answer to.
| Ref | Finding | Severity | CVSS |
|---|---|---|---|
| F-01 | IDOR exposes cross-tenant records | Critical | 9.1 |
| F-02 | Over-privileged service account | High | 8.2 |
| F-03 | Session persists after reset | Medium | 5.4 |
| F-04 | Verbose error disclosure | Low | 3.1 |
What sets a St. Louis engagement with us apart
A scan-and-report vendor
Automated output rebadged as a test. Severities the tool assigned, findings you cannot reproduce, no real attempt at authorization logic or privilege escalation — and a report your assessor hands back. The retest is a new invoice.
CyberFortify
A named tester who works the target by hand, chains findings to prove real impact, and writes them so a St. Louis engineer can fix them and an auditor can accept them. Fixed price, same-day critical escalation, retest included.
Penetration testing in St. Louis, answered
Do you need to be on-site in St. Louis?
Usually not. Web, API, cloud, mobile and external network testing is delivered remotely from our US-based team, which is how most St. Louis engagements run. Internal network, wireless and physical assessments are the cases where we come on-site, and travel is quoted up front.
What should a St. Louis company budget for a test?
There is no per-city rate; cost tracks the size of the engagement — how many apps, cloud accounts, hosts and roles are in scope. You get a fixed quote after scoping, usually the same hour, and it holds for the agreed work.
Will the report satisfy our auditor?
It is designed to. Each finding is reproducible, scored and tied to the control it breaks, which is what an assessor needs. For most Michigan businesses the relevant framework is ISO 27001, and we scope the engagement to it directly.
What do you focus on for Automotive organizations?
We test the manufacturing environment and its IT boundary, the platforms and APIs handling connected-vehicle and customer data, and the dealer-facing systems where personal and financial information concentrates. In a St. Louis engagement that usually starts with plant-floor ot exposure and works outward from there.
Can you sign our vendor security questionnaire?
Yes. We complete SIG, CAIQ and custom questionnaires and can join the vendor review call. For St. Louis companies selling into larger enterprises, a current test plus a completed questionnaire is usually what unblocks the deal.
What is the lead time for testing in St. Louis?
Most St. Louis engagements begin one to two weeks out, or faster against a hard deadline. A scoping call gets you a fixed price and a start date the same hour in most cases.
Penetration testing near St. Louis
We work across Michigan. See nearby cities or the full state overview.
Test your St. Louis systems before someone else does.
A 30-minute scoping call gets you a fixed price and a start date, usually within the hour.