Cybersecurity
360° Cyber Resilience
Anticipate, protect, and respond to emerging threats.
The adoption of a cyber‑resilience strategy, supported by automation, advanced expertise, and cutting‑edge cryptographic technologies, represents a triple performance lever
Resilience and Operational Continuity Lever
Ensuring the critical availability of your systems. By anticipating current and emerging threats, including AI‑enabled attacks and the evolution of computing capabilities, and by automating incident response, you minimize the risk of business disruption, protect margins from remediation costs, and ensure the stability of your value chain.
Trust and Market Differentiation Lever
Protect your services, equipment, and intelligent products from the design stage, by integrating advanced security and encryption mechanisms, including anticipation of post‑quantum challenges. This “cyber trust” becomes a decisive selection criterion for winning demanding markets and enhancing your brand value.
Governance and Strategic Compliance Lever
Transforming regulatory constraints (NIS2, DORA, etc.) into a structured governance framework. Beyond mere compliance, this approach enables the management of cyber maturity through real risk indicators, aligning security investments with business priorities.
Protect. Anticipate. Sustain. Your end‑to‑end cyber strategy
Beyond asset protection, we help organizations sustainably reduce their exposure to cyber risks, avoid high remediation costs, and prevent business disruptions that directly impact margins, operational performance, and stakeholder trust.
We embed security at the core of the organization and across every technological building block. We anticipate the evolving threat landscape, amplified by the industrialization of attacks through AI, increasing computing power, and cryptographic challenges linked to the emergence of quantum technologies.
We support executive management, IT and risk functions in decision‑making, the deployment of cyber‑resilient capabilities, and the management of major incidents, combining proven expertise, security by design approaches, and AI‑augmented analytical capabilities to reduce detection and response times and contain the spread of attacks.
500+
experts
1
“Cloud & Cyber” Center of Excellence (CoE)
Strategy, Governance & Compliance
- Cyber risk, audit and strategy: we support organizations in risk mapping and review, threat-scenario analysis, and the prioritization of critical exposures. Our approach is grounded in comprehensive audits—technical, application, architectural, organizational and physical—to define remediation and hardening strategies aligned with the organization’s risk level.
- Governance and compliance: we establish clear cyber governance models (roles, responsibilities, RSSI/CISO oversight) and deploy robust frameworks (security policies, charters, standards, ISMS) enabling continuous compliance with key regulations and standards, including GDPR, NIS2, DORA, LPM, PCI DSS and ISO 2700x, as well as preparation and support for ISO 27001 certification.
- Resilience, business continuity and crisis management: we strengthen organizational resilience through the definition and regular update of Business Continuity and Disaster Recovery Plans (BCP/DRP), and through the design and facilitation of cyber crisis management exercises, with the objective of reducing operational and financial impact and supporting decision-makers in critical situations.
Cloud & Network Security
- Hybrid architectures, identities & critical flows: we design and secure resilient network and Cloud architectures, ensuring control over flows, identities and exposure points, to protect strategic access in hybrid and multi-Cloud environments.
- Access foundations and collaborative environments: we secure core components of the information system, notably Active Directory and Microsoft 365, by strengthening authentication mechanisms, access controls and identity management—key vectors of compromise.
Protection & Detection by Design
- Security assurance by design and offensive testing: we identify vulnerabilities through penetration testing (web, infrastructure, mobile, application, AI models), combined with the use of specialized AI agents to expand test coverage and replicate realistic attack scenarios. These activities are complemented by code reviews, verification of remediation actions, and, where relevant, organizational and physical security audits.
- Detection, SOC and investigation: we deploy and operate detection capabilities (EDR, SIEM, SOAR, SOC) aligned with business needs, provide supervision through AI-assisted SOC L2/L3 operations, and continuously optimize detection rules, investigations and remediation, supported by a secure run model (MCO/MCS) focused on reducing operational impact.
- Incident response and human resilience: we enhance response capabilities through TDIR mechanisms, incident response services (impact assessment, attack path analysis, malware analysis and remediation), post-incident recovery, and user awareness and training programs (phishing, smishing, business and technical audiences).
Our Interventions
Our Research Work
As cyber threats multiply, AI adoption accelerates, and regulatory complexity increases, organizations must anticipate and innovate to effectively secure infrastructures and intelligent assets.
Our Articles
BEING A CYBERSECURITY LEAD AT ASTEK: BETWEEN EXPERTISE, INNOVATION, AND COMMITMENT
As a key contributor to the development of Astek’s cybersecurity offerings, I strive to embody a technical, human, and strategic vision in a constantly evolving field.
Securing the Future of Financial Systems – Cybersecurity, AI, Cloud Sovereignty, and Compliance in Banking, Finance, and Insurance
For several months, the financial sector has been driven by ambitious promises of a new era of digital resilience…
Cybersecurity at Astek: Ambitious Projects and Ever-Evolving Expertise
My journey at Astek began two years ago, a period marked by numerous opportunities for personal and professional growth.
Cyber Commando: audits, penetration testing, and breakpoint stress testing for a payments leader
For a French payment services and card processing player, we deployed a specialized intervention task force to conduct high-precision offensive audits on critical applications. To ensure absolute neutrality and complete isolation, this cyber commando operated in a double-blind mode, with no access to prior findings, confronting systems with the raw reality of real-world threats.
By combining Black Box intrusion scenarios (external attacker conditions) and Grey Box assessments (internal functionality analysis), our experts dissected each vulnerability to assess its immediate business criticality. This tactical approach goes beyond vulnerability listings: it delivers an emergency remediation roadmap and tangible proof of resilience, securing banking transaction flows and reinforcing the trust of France’s leading retail brands.
Cyber Resilience Optimization and Accelerated Operational Efficiency for an Aviation Industry Leader
Astek supports a global leader in aviation technologies in strengthening the security and performance of its IT infrastructure, used by development teams across more than 15,000 virtual servers.
Embedded within the Aviation Delivery Center, Astek teams automate the deployment of security tools (vulnerability detection, malware protection, IAM), remediate identified weaknesses, and contribute to a high-availability DevOps approach.
Astek sustainably enhances infrastructure security, boosts productivity through automation and monitoring, and optimizes operating costs through an international delivery model.
Application Modernization Partnership and Innovation Acceleration for a Major Hospital Group
Astek supports one of France’s largest university hospital groups in its digital transformation by taking ownership of Application Maintenance Services (AMS) for mature Hospital Information System applications.
Astek teams handle functional specifications, development, qualification, deployment, and maintenance of new and existing web and mobile applications, delivered in agile mode and integrated with core business databases. This outsourcing model delivers significant productivity gains, ensures excellent service continuity, and enables the development of scalable, sustainable applications—while freeing internal IT teams to focus on innovation.
Cyber Governance and Operational Resilience: Securing Growth for a Leading French Insurance Group
For a major insurance group, we led an offensive cybersecurity strategy designed to transform risk management into a business trust asset. The objective was to secure the Group’s digital innovation by industrializing cyber qualification across projects and hardening critical technology components.
By embedding cyber expertise from the design phase (Secure-by-Design) and automating third-party compliance analysis, we drastically reduced exposure to digital risks while accelerating brand time-to-market. This approach transformed a control function into a growth partner, ensuring that each new data flow or vendor relationship strengthens overall Group resilience without slowing operational cycles.
Access Security and Operational Resilience for a CAC 40 Leader
Astek operates a specialized resource center dedicated to the availability and security of network infrastructures for a flagship CAC 40 company, in partnership with a major cybersecurity provider.
The strategic objective is to guarantee full immunity of critical access through the management, evolution, and migration of the CyberArk solution. By fully rebuilding production platforms and simulating crisis scenarios (crash tests), our Level 2 and Level 3 support teams secure business continuity against cyber threats.
This trusted partnership turns security maintenance into a resilience lever—ensuring rapid incident response while strengthening application assets through continuous technological hardening.
Cloud & Cyber resilience strategy: multi-cloud security and microsegmentation for the banking sector
For a leading European banking group, the organization leads the security of cloud-native environments within a complex multi-cloud architecture (Azure & IBM). The mission transforms a traditional perimeter-based security model into a microsegmentation strategy (Illumio) combined with native filtering (ACLs, Security Groups). This approach ensures granular traffic protection, strict compliance of application migrations and precise governance of network resilience in the face of cyber threats.
Cybersecurity & Cloud Ops: Automating Critical Security and Ensuring Resilience at Massive Scale (15,000+ Servers)
For a global leader in technology distribution platforms, the Group secures and ensures the integrity of a critical infrastructure comprising more than 15,000 virtual servers.
By integrating a DevOps approach and a Follow-the-Sun operating model, the mission automates deployment of defensive layers (Qualys vulnerability detection, CrowdStrike EDR protection) and orchestrates privileged access management (CyberArk IAM). This guarantees absolute service continuity and proactive protection against cyber threats at global scale.