IS Architecture Audits, Penetration Testing & Security Hardening
Protecting information systems relies on robust, audited, and proven technical mechanisms. Castelis helps you evaluate, test, and harden your security mechanisms to reduce risks and improve your cyber posture.
Evaluate and strengthen your IS
IS robustness is not declared, it is tested. We address the technical foundations of your security to identify vulnerabilities, test defenses, and reinforce protection mechanisms.
IS Architecture Audit
Analysis of network and system architectures to assess the coherence, segmentation, and overall robustness of the IS against threats.
Configuration Audit
Evaluation of system, equipment, and application configurations to identify gaps, weaknesses, and configuration-related risks.
Application & Code Audit
Analysis of applications and source code to detect vulnerabilities, bad practices, and security risks from the development phase.
Security Deployment
Integration of security solutions for workstations, servers, networks, and applications to strengthen protection against known and emerging threats.
Penetration Testing
Real-world attack simulations to assess system resistance and measure risk exposure.
Purple Exercise
Collaborative Red Team / Blue Team exercises to test detection capabilities and improve existing defense mechanisms.
/ A structured and targeted technical approach
Our methodology relies on a progressive and pragmatic approach, making it possible to diagnose existing systems, test security under real conditions, and effectively strengthen technical mechanisms.
Scoping
Definition of scope, security objectives, and technical constraints of the audited environment.
Technical Analysis
Conducting architecture, configuration, and application audits to identify critical vulnerabilities and risk areas.
Targeted Hardening
Implementation or adjustment of technical protection mechanisms based on identified vulnerabilities.
Security Testing
Penetration tests or Purple Team exercises to assess the real resistance of the IS after hardening.
Reporting & Prioritization
Results analysis, clear vulnerability reporting, and prioritization of corrective actions in the short and medium term.
/ Tech stack
Our interventions rely on proven protection, audit, and testing tools, selected for their effectiveness and adapted to the real constraints of your information system.
Tools selected for their effectiveness, without technological overkill.
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Frequently asked questions — technical security
Audits are recommended during major IS changes, before a sensitive production release, or on a regular basis to maintain an adequate level of security against current threats.
Tests are framed in advance to minimize impact on production. Depending on the context, they can be performed outside of production or with appropriate precautions.
Purple Team brings together offensive and defensive teams to improve attack detection and strengthen response capabilities, in a pedagogical and continuous improvement approach.
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