PTES-Aligned Penetration Testing Methodology
The Penetration Testing Execution Standard is a community-developed methodology defining what a professional penetration test should actually consist of, structured into seven phases from pre-engagement scoping through to reporting. It is not tied to a specific tool or technology stack — it defines the process discipline that separates a structured engagement from a loosely-run vulnerability scan with a report attached.
Mutex Systems structures penetration testing engagements around the PTES phase model, ensuring scoping, threat modelling, and post-exploitation analysis get the same rigour as the exploitation phase itself.
- Category
- Testing Methodology
- Jurisdiction
- International
- Issuing Body
- PTES Technical Working Group (community-developed standard)
- Current Version
- PTES — community-maintained since its initial development around 2009-2012
- Who It's For
- Organisations that want penetration testing run as a structured, repeatable process rather than an ad hoc exercise — particularly relevant when the test needs to withstand scrutiny from a regulator, auditor, or board.
Core Domains
A Practical Engagement Path
- 01
Pre-Engagement & Scoping
Define scope, rules of engagement, and success criteria before any technical work begins — the phase most often skipped by less disciplined providers.
- 02
Reconnaissance & Threat Modelling
Gather intelligence on the target and model realistic attack paths specific to the organisation, not a generic checklist.
- 03
Vulnerability Analysis & Exploitation
Systematically identify weaknesses and demonstrate real-world exploitability through controlled proof-of-concept exploitation.
- 04
Post-Exploitation & Reporting
Assess actual business impact through post-exploitation analysis, then deliver a report structured for both remediation teams and executive stakeholders.
Process Discipline From Scoping Through Reporting
Engagements are structured against the PTES phase model so pre-engagement scoping and post-exploitation impact analysis get the same discipline as the exploitation work itself.
- Rules of engagement and scope agreed formally before technical testing begins
- Threat modelling tailored to the specific target rather than a generic checklist run against every client
- Post-exploitation analysis assessing real business impact, not just a list of technically exploitable findings
Rules of Engagement and Scope, on the Record From Day One
grComply gives the Pre-Engagement Interactions phase a structured home — scope, rules of engagement, and success criteria recorded as part of the compliance system of record rather than a separate email thread that gets lost by the time the report is delivered.
- Every finding through Exploitation and Post Exploitation is logged with an immutable audit trail, giving a defensible record of exactly what was tested and when
- Reporting output links back to the specific control or regulatory clause each finding supports, useful when the engagement exists to evidence a framework requirement rather than testing in isolation
grComply is Mutex Systems' own multi-tenant GRC automation platform — the framework library, hybrid scanning, risk and audit workflow, and AI-assisted compliance behind every point above are live in production today.
See How grComply WorksCommon Questions About PTES
What are the seven phases of PTES?
Pre-Engagement Interactions, Intelligence Gathering, Threat Modelling, Vulnerability Analysis, Exploitation, Post Exploitation, and Reporting. Each phase has defined objectives, and the standard is deliberately technology-agnostic — it defines the process discipline rather than prescribing specific tools.
How is PTES different from OWASP testing standards?
PTES defines the overall engagement process and methodology for a penetration test of any kind — network, application, physical, or social engineering. OWASP's ASVS and MASVS define the specific technical requirement checklists for web and mobile application testing. In practice, a well-run application penetration test often follows the PTES process structure while using OWASP ASVS or MASVS as the technical requirement checklist within the Vulnerability Analysis and Exploitation phases.
Why does the Pre-Engagement phase matter so much?
Pre-Engagement Interactions establish scope, rules of engagement, emergency contacts, and success criteria before any technical testing starts. Skipping or rushing this phase is the most common source of scope disputes, missed critical systems, and engagements that technically "complete" without actually answering the client's real question. It is the phase most often shortchanged by less disciplined providers.
What is the difference between Exploitation and Post-Exploitation?
Exploitation demonstrates that a vulnerability can actually be exploited — proof that the weakness is real, not theoretical. Post-Exploitation goes further, assessing what an attacker could actually achieve after that initial exploitation — lateral movement, privilege escalation, and access to sensitive data — which is usually what determines the real business risk rating of a finding.
Does Mutex Systems follow PTES for penetration testing engagements?
Yes. Mutex Systems structures penetration testing engagements around the PTES phase model, from formal pre-engagement scoping through post-exploitation impact analysis and reporting.
Ready to Start Your PTES Programme?
Send us your current posture and timeline. Within two working days you will receive a written response and a proposed scoping call.