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Colorado-based · CREST-certified tester · Fixed price

Penetration Testing in Denver

Denver organizations rarely answer to one framework. A SaaS company may face a SOC 2 audit and a healthcare customer's security questionnaire in the same quarter. Zero Day Security runs one fixed-price engagement covering the systems in scope, with a report each of your reviewers can use.

Book a Free Scoping Call

Who We Help in Denver

SaaS & Software

Energy & Government Suppliers
Healthcare & Fintech

Software companies in LoDo, RiNo and the Tech Center selling to enterprise buyers who ask for a recent third-party pentest before signing, often alongside a SOC 2 audit.

Healthcare & Fintech

Energy & Government Suppliers
Healthcare & Fintech

Healthcare providers and health-tech vendors handling ePHI under HIPAA, plus fintech, payments and lending firms with PCI DSS obligations and bank partners who review vendor security.

Energy & Government Suppliers

Energy & Government Suppliers
Energy & Government Suppliers

Energy companies' corporate networks, remote access and field-office Wi-Fi (industrial control systems are out of scope), and contractors working toward NIST SP 800-171 and CMMC.

Penetration Testing Services

Web Application & API

External & Internal Network
External & Internal Network

Manual testing against the OWASP Top 10 and ASVS, including REST and GraphQL APIs and business-logic flaws such as broken access control between tenants.

External & Internal Network

External & Internal Network
External & Internal Network

Your internet-facing perimeter (VPNs, remote-access portals, cloud edges), plus assumed-breach internal testing of Active Directory, privilege escalation and lateral movement.

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Wireless & AI/LLM

External & Internal Network
Wireless & AI/LLM

On-site WPA2/WPA3 and enterprise Wi-Fi testing at your Denver office, and testing of chatbots, RAG pipelines and AI agents for prompt injection and data leakage.

Compliance Drivers in Denver

PCI DSS v4.0 Requirement 11.4

PCI DSS v4.0 Requirement 11.4
PCI DSS v4.0 Requirement 11.4

Internal and external penetration testing at least every 12 months and after significant changes, plus segmentation testing where segmentation reduces scope.

HIPAA & SOC 2

PCI DSS v4.0 Requirement 11.4
PCI DSS v4.0 Requirement 11.4

A pentest commonly supports HIPAA's required risk analysis and periodic evaluation, and the evidence SOC 2 auditors look for under CC4.1 and CC7.1. One test can serve both.

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Colorado Law & CMMC

PCI DSS v4.0 Requirement 11.4
Colorado Law & CMMC

C.R.S. 6-1-713.5 requires reasonable security for Coloradans' personal data, and contractors handling CUI use testing to support NIST SP 800-171 and CMMC assessments.

Denver Penetration Testing FAQ

Questions about testing in Denver? Email info@zerodaysecurity.net or book a free scoping call.

Yes. Internal network and wireless testing can be done on-site anywhere in the Denver metro and is scheduled as part of the overall engagement, at times that suit your staff and change windows. If your environment allows secure remote access, internal testing can also be run remotely. Application and external testing are normally done remotely, which lets the work fit around your schedule.


Usually not. If the same systems sit in scope for each framework, one engagement can cover them, with findings mapped to PCI DSS 11.4, the HIPAA Security Rule risk analysis and the SOC 2 criteria your auditor reviews. The scoping call confirms whether your environments overlap enough. Where they don't, such as a separate cardholder data environment, the quote shows the additional scope separately.


No. Testing covers the corporate IT environment, including office networks, remote-access gateways, VPNs, cloud services, web applications and wireless. Industrial control systems and SCADA networks need specialist OT testers and safety-focused rules of engagement, so they're excluded. Testing often focuses on whether an attacker could reach the boundary between IT and OT, and that boundary can be in scope.


Start dates depend on scope and the test window you need, and are agreed on the scoping call along with the fixed price. Focused Assessments take about one week of testing, and full application tests take one to two weeks. If you have an audit or customer deadline, raise it on the call so the test and retest can be scheduled to finish before it.


It starts with a free scoping call to agree targets, test windows and rules of engagement, and you receive a fixed price in writing. Testing is manual and non-destructive, and critical findings are reported immediately. The report includes an executive summary, CVSS-scored findings with evidence and remediation steps, and a methodology section for auditors. Once you've fixed the findings, a free retest confirms what's closed.


Every test is performed by a CREST-certified tester who also holds CREST CPSA, OffSec OSCP, OSWA, OSWP and OSAI, plus the HTB Certified Offensive AI Expert (COAE). All are practical, exam-based credentials. The same tester handles your engagement from scoping to retest, and every engagement is fixed-price with a free retest included.


Ready to Scope Your Denver Pentest?

Book a free scoping call. Tell us what you need tested and any deadline, and you'll get a clear fixed-price proposal.

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