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Security7 min
Pentest 101 — Black Box, White Box and Gray Box
Penetration testing assesses a system's security posture from a controlled attacker's perspective. Three approaches define the field.
Black Box — zero knowledge
Almost no info shared with testers. Best simulates a real external attacker. Ideal for newly launched, public-facing products.
White Box — full knowledge
Source, architecture and docs shared. Fastest at surfacing deeply hidden weaknesses. Best fit for ongoing engineering security review.
Gray Box — balanced
User-level access plus partial docs. Practical middle ground for most organizations on a cost/benefit basis.
Vendor selection
Don't optimize on price alone. Methodology, team expertise and contract commitments determine whether the report becomes action.