Security Audit: DIY vs Professional — What You're Actually Risking
Free scanning tools are genuinely useful for baseline hygiene. What they cannot do is read your configuration, trace your third-party dependencies, or tell you what you have exposed without knowing it. That is what an external posture review is for — and, just as important, what it is not.
| Dimension | DIY Scanning Tools | External Posture Review |
|---|---|---|
| Exposed surface | Ports and services it can reach | DNS, SSL/TLS, headers, CDN, subdomains, orphaned records |
| Email configuration | Rarely checked | SPF, DKIM, and DMARC reviewed |
| Exposed secrets | Pattern scan of your own repo | GitHub, env files, public files, keys that should not be visible |
| Third-party and supply chain | Dependency version check | Dependencies, services, and integrations past end-of-life |
| What is missing | Not reported | Reported — a review states what it found and what it did not |
| Exploitation of findings | No | No — nothing is run against your live systems |
| Business-logic testing | No | No — outside an external review |
| Phishing your people | No | No — we never contact staff or customers |
| Accreditation | None | None — this carries no security accreditation |
| Report | Generic finding list | Prioritized fix list plus a plain-language executive summary |
| Cost | Free (open-source scanners) | Quoted after a brief |
| Time | Minutes to hours | 7–10 business days |
What DIY Tools Actually Check
- Known CVEs in dependencies (Snyk, npm audit)
- Basic header checks (missing CSP, HSTS)
- SSL/TLS configuration
- Open ports and services
- Surface-level OWASP Top 10
What an External Posture Review Adds
- Everything above, plus a manual read of the configuration
- Orphaned DNS records pointing at expired services
- Domains and subdomains you did not know you exposed
- Third-party services and integrations past end-of-life
- A prioritized fix list, with effort estimates
- A one-page executive summary for a CEO, board, or investors
- An explicit list of what was not covered, so a clean report is not read as full coverage
What It Does Not Include
- No exploitation. A penetration test actively uses vulnerabilities against your systems; we do not.
- No business-logic testing. Pricing abuse and authorization flaws need access to a live application.
- No phishing or social engineering. We never contact your staff or your customers.
- No accredited assessment. This is an advisory review and carries no security accreditation.
- No compliance certification. We report what is configured and what is missing; we do not certify against a framework.
Frequently Asked Questions
Can I just use free security tools?▼
Yes, and you should — for baseline hygiene. Run npm audit, check your headers, scan for exposed secrets. What a scanner reports is limited to what it can reach over the network. An external posture review adds the manual read of your configuration, your orphaned DNS records, and your third-party dependencies. It does not attempt exploitation, business-logic testing, or phishing, and it carries no security accreditation.
Is this a penetration test or an accredited assessment?▼
No to both. A penetration test actively exploits vulnerabilities; an accredited assessment is issued by a certifying body. Ground Zero LLC performs an external posture review — we evaluate your public attack surface, configurations, and third-party risk without touching your live systems. That boundary is a deliberate limit, not a gap to be discovered later.
How often should I get a professional audit?▼
At minimum, annually. Before major launches, after significant code changes, or when entering a regulated industry. Ground Zero LLC's SME Security Audit is quoted after a scoped brief, with a 7–10 business day delivery.
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Send a 10-minute brief. We’ll tell you which option fits — no commitment.
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