RRNK SECURITY TH
Find the weakness before it becomes an incident.
ค้นหาช่องโหว่ ก่อนที่ความเสี่ยงจะกลายเป็นเหตุการณ์จริง
RRNK Security runs predominantly manual penetration tests to find the flaws automated tools miss, proves real impact inside an authorised environment, and delivers reporting your engineers can act on immediately.
Written authorisation required • Aligned to OWASP guidance • Severity communicated with CVSS
About us
RRNK SECURITY TH
RRNK / RUM RUAY NUEA KHEED
RRNK Security is a penetration testing and security assessment team that works systematically to OWASP guidance. We test predominantly by hand, prove real impact inside an authorised environment, and deliver reporting your engineers can act on immediately — without overstated promises.
Trust
Professional certifications held by our team
Testing is carried out by practitioners who have passed internationally recognised practical examinations. These certifications belong to individuals on the team, and we say so plainly rather than implying company-level accreditation.
- OSCP Offensive Security Certified Professional OffSec
- eWPT eLearnSecurity Web Application Penetration Tester INE Security
- eWPTX eLearnSecurity Web Application Penetration Tester eXtreme INE Security
- CPSA CREST Practitioner Security Analyst CREST
- CRT CREST Registered Penetration Tester CREST
These are certifications held by individual members of the team. They are not company-level accreditations, and they do not make RRNK Security an accredited organisation or an official partner of any certification body.
Services
What we test
We choose the testing approach that fits your architecture and your risk, rather than running the same scanner profile against every engagement.
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Web application penetration testing
Predominantly manual testing aligned to the OWASP Web Security Testing Guide, including the business-logic flaws automated scanners cannot detect.
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API security testing
REST, GraphQL and gRPC testing referencing the OWASP API Security Top 10, focused on object-level and property-level authorisation.
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Mobile application security testing
Android and iOS testing following OWASP MASVS and MASTG, covering the client, its transport and the services behind it.
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Internal infrastructure penetration testing
Simulates an attacker who is already on the network, to show how they would escalate privilege and move towards critical systems.
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External infrastructure penetration testing
Assesses everything your organisation exposes to the internet, from the position of an attacker with no access at all.
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Cloud configuration and security assessment
Review of cloud account configuration, entitlements and resource isolation against each provider’s own documented guidance.
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Source code security review
Reading the code alongside dynamic testing to find the root cause of a vulnerability rather than only its symptom.
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Vulnerability validation
Triage of automated scanner output: false positives removed, and only genuinely exploitable issues confirmed.
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Remediation consultation
Working with your engineering and infrastructure teams to design fixes that are practical for the architecture you actually have.
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Penetration test retesting
Retesting of remediated findings to confirm the fix works and has not introduced a new weakness.
Methodology
A process you can audit
Every engagement starts with an explicit scope and written authorisation, and ends with a closure report after retesting. You always know what we are testing, when, and how.
- 01
Scoping and authorisation
Identify target systems, environments, testing window and contacts, then obtain written authorisation before any testing begins.
- 02
Rules of engagement
Agree what is and is not permitted — including availability-affecting tests, emergency contact channels, and the conditions under which we stop immediately.
- 03
Threat modelling
Understand the architecture, trust boundaries and valuable assets, so testing time is spent where it produces the most useful result.
- 04
Manual and tool-assisted testing
Tools map the attack surface broadly; manual testing goes deep where understanding the application’s context is what actually finds the flaw.
- 05
Exploit validation in the authorised environment
Demonstrate that a finding is genuinely exploitable within the authorised environment, separating real risk from theoretical risk.
Standards
The frameworks we work to
We use open standards as a coverage framework and a shared language for results, so findings are comparable and reviewable. Referencing them is not a claim of accreditation or partnership.
- OWASP Web Security Testing Guide 4.2
- OWASP Application Security Verification Standard 5.0.0
- OWASP Top 10 2025
- OWASP API Security Top 10 2023
- OWASP MASVS 2.1.0
- OWASP MASTG 2.0.0
- CVSS 4.0
Versions verified against the official sources on .
Deliverables
Reporting you can act on
Every report carries reproduction steps, supporting evidence, business impact analysis, and remediation guidance specific enough for your engineers to implement.
- Executive summary — Risk summarised in business language, with an overview of finding counts and severities.
- Scope and authorisation — What was in scope, what was excluded, the testing window, and the authorisation record relied upon.
- Methodology applied — The approach and the referenced standards as they were applied to this specific engagement.
- Detailed findings — Each with a description, affected location, reproduction steps, evidence, severity rating and remediation guidance.
- Impact analysis — What each finding means for your business in its real operating context.
- Prioritised remediation plan — Remediation work ordered by impact and by implementation effort.
- Testing limitations — An explicit record of what could not be tested, or could not be tested fully, and why.
- Appendices — Tooling used, significant activity logs, and supporting reference material.
Process
How we work together
From the first scoping conversation to the closure report.
- 01 Scoping and authorisation
- 02 Rules of engagement
- 03 Threat modelling
- 04 Manual and tool-assisted testing
- 05 Exploit validation in the authorised environment
- 06 Impact analysis
- 07 Evidence-backed reporting
- 08 Remediation consultation
- 09 Retesting
- 10 Final closure report
Why us
Why organisations choose RRNK SECURITY TH
We do not sell scanner output. We sell better decisions, built on findings that have actually been proven.
- 01
Manual testing by practically examined testers
Every engagement has a named tester who holds an internationally recognised practical certification, and every result is reviewed internally before delivery.
- 02
Proven impact, not a list of possibilities
We remove false positives, confirm only what is genuinely exploitable, and explain the business impact in language leadership can use.
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Always inside the agreed boundary
No testing starts before written authorisation, and no testing leaves the scope that was agreed in writing.
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Honest about limits
No assessment finds every weakness. Our reports state the scope, the limitations, and what was not tested — plainly.
FAQ
Questions clients ask
What do we need to prepare before testing starts?
The essentials are a clear list of target systems and written authorisation from someone empowered to grant it. For authenticated testing we will ask for test accounts at each privilege level, and where possible we prefer a test environment separated from production.
Will testing disrupt our production systems?
We design engagements to minimise availability risk and agree rules of engagement before starting. Higher-risk testing is performed only with explicit approval and with an emergency contact channel in place.
How long does an engagement take?
It depends on scope and system complexity. We estimate duration after the scoping conversation, and we will say plainly if the available time is not enough to cover the scope properly.
Is retesting included?
We normally include retesting in the proposal with an explicitly stated window. The details are agreed during proposal stage.
Can the report be used for audit or regulatory purposes?
Our reports are written to support internal audit and external review, with scope, methodology, evidence and limitations clearly stated. Requirements differ between regulators, so tell us in advance if the report needs to align with a specific framework.
Is RRNK Security CREST accredited?
Not at company level. Members of our team hold the CPSA and CRT certifications, which are individual credentials. We state this explicitly because company accreditation and individual certification are different things.
Contact
Start with a scoping conversation
Tell us roughly what you need tested and we will come back with a proposed scope, duration and testing approach.
We test only with written authorisation and only within the agreed scope.