Black-Box
Penetration Testing

Zero-knowledge security testing that simulates a real external attacker — we start with nothing but your target and work exactly as an outsider would, from reconnaissance to exploitation.

Overview

See what an outsider sees.

Black-box penetration testing gives you the most realistic external-attacker perspective. We receive no credentials, documentation, or source code — only the target — and replicate how a real adversary would discover and exploit your weaknesses.

It is ideal for validating your external exposure and incident readiness. Because no insider knowledge is shared, black-box testing favours breadth of discovery; pairing it with grey-box testing later gives deeper coverage for the same systems.


Approach

What black-box covers.

External-attacker simulation with no prior knowledge or access.

Methodologies: PTES OSSTMM OWASP NIST SP 800-115

FAQ

Black-box penetration testing FAQ

The questions we're asked most about scope, cost, and timing.

How much does black-box penetration testing cost?
Black-box testing typically starts around €2,000 and scales with the size of the attack surface. Because no insider information is provided, it can take longer per finding than grey-box. Use our estimator for a tailored figure.
What is black-box penetration testing?
Testing performed with no prior knowledge, credentials, or source code — the tester works exactly as an external attacker would, starting from reconnaissance.
When should we choose black-box over grey-box or white-box?
Choose black-box to validate your external exposure and detection. Choose grey-box for the best coverage-per-budget, and white-box for the deepest, most thorough review.
Is black-box testing enough on its own?
It is excellent for realism but can miss issues only visible with access. Many organisations alternate black-box and grey-box engagements over time.
What do we receive?
A CVSS-scored report with reproduction steps, an executive summary, an attestation letter, and a free retest within 60 days.
What do you need to start a black-box test?
Just the in-scope targets (domains, IPs, or app URLs) and written authorisation — no credentials or documentation.
Does black-box guarantee you find everything?
No approach guarantees that; black-box maximises realism but can miss issues only visible with access, which is why grey-box often complements it.
Is black-box more expensive?
It can take longer per finding because time is spent on discovery, but scope and depth ultimately drive the price.
Can black-box include social engineering?
Yes — realistic external attacks often combine technical and social vectors; we agree this in scope.
What do we receive?
A CVSS-scored report with reproduction steps, an executive summary, an attestation letter, and a free retest within 60 days.

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A 30-minute scoping call costs nothing. A real breach costs considerably more.

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