Adversarial Simulation
External Penetration
Testing.
A full external penetration test simulates a motivated attacker targeting your organisation from the internet — no insider knowledge, no internal network access. We use the same tools and techniques as real threat actors to find and document every weakness in your external perimeter.
What It Is
Think Like
The Attacker
Our external penetration testing service is a full adversarial simulation conducted from the perspective of a threat actor with no insider knowledge. We operate entirely from the internet, using the same reconnaissance, exploitation, and credential attack techniques that real attackers employ.
The engagement follows a black-box methodology: we start with only your company name and domain, then systematically discover and test every externally accessible system, service, and account we can find.
We stop at the point of access, document exactly how we got in, and deliver a comprehensive report with CVSS-scored findings, screenshots, and actionable remediation steps.
External Penetration Testing
Full adversarial simulation
- Zero insider knowledge — black-box methodology
- OSINT-driven reconnaissance of public data
- Credential gathering from breached data sources
- Credential stuffing & account takeover attempts
- Attack surface inventory with risk ratings
- Full written report + executive summary + debrief
Pentest Capabilities
What We Target
The following capabilities apply to our full external penetration testing service.
Credential Attacks
Password spraying, brute-force, and credential stuffing against externally exposed login portals — Active Directory, SSO, email services, and SaaS platforms.
Credential Harvesting & Stuffing
OSINT-driven collection of leaked and exposed credentials, followed by systematic credential stuffing and password spraying against your externally accessible accounts.
External Attack Surface Mapping
Enumerate your public-facing infrastructure — subdomains, open ports, exposed APIs, and misconfigured services — to understand exactly what attackers can see.
Scope
What's In —
And What's Not
We operate strictly within the agreed external perimeter. We do not pivot from an external compromise into your internal network. Our focus is on the attack surface visible from the internet — this keeps the engagement scoped, safe, and highly relevant to real-world external threats.
Why It Matters
The Cost of Not Testing
External attack vectors are the primary entry point for modern breaches. Without regular testing, these risks remain invisible until it's too late.
Business Email Compromise
Attackers take over a single mailbox and impersonate executives to redirect wire transfers — average loss exceeds $130,000 per incident.
Ransomware Entry Points
83% of ransomware intrusions begin with a compromised external credential or exploited vulnerability. External testing closes that door before attackers open it.
Compliance Exposure
SOC 2, ISO 27001, and PCI-DSS all require evidence of regular penetration testing. A breach without documented tests means failed audits and regulatory fines.
Reputational Damage
Customer data breaches are public. The cost of a breach averages $4.45M, but the reputational hit often outlasts the recovery bill.
The average time to identify a breach is 194 days. By then, attackers have had over six months of undetected access to your systems, email, and customer data. External pen testing finds the door before they walk through it.
Our Process
From Kickoff to Report
Scoping Call
We define the target domains, IPs, and systems. Rules of engagement are documented and signed off before any testing begins.
Reconnaissance
Passive and active OSINT against your organisation — leaked credentials, exposed endpoints, email format discovery, and shadow IT inventory.
Attack Execution
Controlled execution of credential attacks, external vulnerability exploitation, and systematic attack surface testing against agreed targets.
Reporting & Debrief
Detailed written report with findings, CVSS scores, screenshots, and remediation steps. Live debrief call with your security team included.
Get Pricing
Request
Pricing.
Tell us about your environment and we'll reach out with a scoped proposal tailored to your needs.
Let's Talk Security
Reach out to the VSAT Security team directly and we'll get back to you within 24 business hours. Tell us about your environment and the engagement you have in mind.
Your email client will open with the subject and a short prompt — just add your company name and the services you're interested in, then hit send.