Cybersecurity Consulting Firm – Cyber Castellum
Security controls that have never been tested under real attack conditions offer false assurance. Penetration testing gives you clarity on what's actually working, so your investment in security earns real trust, not assumed trust.
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.
Two vantage points, one attacker mindset — see how each engagement uncovers a different half of your exposure.
Simulates an attacker after gaining access to the internal network.
Simulates an actual attack from outside the organization.
Requires internal network access through VPN or a client-provided VM.
Begins with publicly sourced information and external targets.
Identifies internal assets, ports, services, and network devices.
Assesses the organization's external technology landscape, including web applications.
Includes LDAP enumeration, shared-resource enumeration, spoofing, MitM, and password attacks.
Focuses on exploiting identified vulnerabilities and misconfigurations and bypassing security restrictions.
Tests application, network, operating-system, and social-engineering vulnerabilities.
With explicit client approval, may assess pivoting, persistence, and data-exfiltration paths.
We define clear testing objectives, scope, limitations, and rules of engagement to ensure every assessment is controlled and aligned with your business requirements.
Our testers collect publicly available intelligence and conduct reconnaissance to identify potential attack paths, exposed assets, and information that could be leveraged by real-world attackers.
We safely exploit discovered vulnerabilities to validate their real-world impact while minimizing disruption to your systems and business operations.
Where authorized, we simulate attacker behavior after initial compromise to assess privilege escalation, lateral movement, and access to critical systems and sensitive assets.
Detailed findings include evidence such as proof-of-concept screenshots and technical details to clearly demonstrate how vulnerabilities can be exploited.
Receive practical, prioritized recommendations to help your team address identified weaknesses and strengthen defenses against similar attacks.
Book a free consultation to see how your systems hold up against real-world attacks.
Speak directly with a certified consultant.
We respond within 24 business hours.
No sales reps, only experienced consultants.
Get guidance based on your industry, goals, and risk.
