Cybersecurity Consulting Firm – Cyber Castellum

Our Services

Penetration Testing Services

Uncover real-world vulnerabilities before attackers do. Our expert-led penetration testing services reveals your infrastructure most critical risks before they’re exploited by the bad guys.

The wrong pen test partner could cost you, your reputation and millions of dollars in lost business

Clarity on every path an attacker could take.

Two Ways In. We Test Both.

External and internal testing answer two different questions. Together, they give you the full picture — not just part of it.

External Penetration Testing: What a stranger on the internet could do to you. Using only public data like IPs, DNS records, third-party services, past breach leaks we simulate a real outside attack, so you see what an attacker sees before they get in.

Internal Penetration Testing: What happens after someone gets in an outside attacker who broke through, or a threat from inside. We find what external testing can't: weak accounts, spoofing, exposed shared files, and reused or default passwords.

ADVISORY

Internal vs. External Penetration Testing

External and internal penetration testing are complementary — not interchangeable — disciplines within a mature vulnerability management program.

Internal Penetration Testing
External Penetration Testing
01

Purpose

Simulates an insider or compromised device, testing what damage can be done once inside.

Simulates an outside attacker with no prior access, testing whether the perimeter can be breached.

02

Attack Perspective

Inside-out, starts with some network access or credentials.

Outside-in, zero starting access.

03

Testing Scope

Internal network, Active Directory, file shares, internal apps.

Public IPs, websites, VPNs, cloud-facing services.

04

Business Risk Addressed

Severity and reach of a breach once it occurs.

Likelihood of an external breach.

05

Typical Deliverables

Attack path narrative showing breach impact and privilege escalation chain.

Attack surface report with exploited vulnerabilities and remediation steps.

FEATURES

What’s Included in Our Penetration Testing Services

External Penetration Testing

We simulate attacks from the outside world to evaluate perimeter defenses and public-facing systems.

Internal Penetration Testing

Our experts mimic insider threats or post-breach actors to uncover internal risk exposures.

Web & Mobile App Testing

Identify logic flaws, insecure code, and bypassable features in web and mobile applications.

Cloud & API Testing

Test cloud environments and APIs for misconfigurations, insecure integrations, and exposed assets.

Wireless & Social Engineering

Evaluate wireless networks and user awareness through tailored phishing and physical attack simulations.

Detailed Reporting & Remediation Support

Receive clear, actionable reports, including business risk context and expert remediation guidance.

Shape

Ready to Test Your Defenses?

Book a free consultation to see how your systems hold up against real-world attacks.

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