Trainee NetSec - (Internship September 2026)

Les entreprises et les gouvernements comptent sur Thales pour apporter de la confiance aux milliards d’interactions numériques qu’ils établissent avec les utilisateurs. L’Activité Mondiale Identité & Sécurité Numériques (DIS) fournit des technologies et services (des logiciels sécurisés en passant par la biométrie ou encore le cryptage), qui permettent aux entreprises ainsi qu’aux gouvernements de vérifier des identités, et de protéger les données afin qu’elles restent sûres.

Internship Opportunity

Network & Cloud Security Intern

Department: Network Security (NetSec)

Location: Zaventem Belgium

Duration: 3–6 months (September 2026)

Level: Master students / Final-year Bachelor (Cybersecurity, IT, Engineering)

About the Internship

We are offering internship opportunities within ourNetwork & Cloud Security (NetSec) team.

This internship provides hands-on exposure to real-world enterprise security environments, covering:

• Cloud Security
• OT / Industrial Security
• Detection & Response
• Infrastructure as Code
• Security Innovation & Automation

Interns will work on strategic, technical, and research-oriented projects with the objective of producing deployable solutions, proof-of-concepts, comparative studies, or automation frameworks.

Internship Topics

Below is a non-exhaustive list of possible subjects.

Cloud Security

• Microsoft Security Copilot
• Development of automated O365 / Azure / AWS audit tools (CIS, MS DSC, ISO frameworks)
• Zero Trust architecture implementation in AWS, Azure, and GCP
• Incident response & digital forensics in cloud environments
• Data encryption strategies (at rest & in transit)
• Microsoft Priva (GRC / ISG integration)

Projects may include:

• Automation development
• Compliance alignment
• Architecture design
• Risk analysis and mitigation

Focus areas:

• Pipeline automation
• Secure coding best practices
• Cloud-native security controls

OT & Industrial Security

• Creation of an OT lab (IEC104, Modbus, MQTT, DNP3, TIA Portal)
• OT solution comparison (Armis, Defender for OT, Nozomi, Trend Micro)
• Secure remote access in ICS environments (VPN, jump servers, OT PAM)
• (I)IoT device security assessment & hardening
• OT honeypot deployment and threat analysis
• Embedded device security in industrial control systems

Projects may involve:

• Lab simulation
• Vulnerability assessment
• Hardening implementation
• Comparative evaluation reports

General Cybersecurity & Innovation

• DLP technology comparison (Varonis, Netskope, Microsoft Purview)
• Fortinet full fabric implementation
• SYSLOG / Mini-SIEM implementation
• AI-driven firewall or threat detection research (inspired by Darktrace-like models)
• Splunk architecture deployment via Terraform & Ansible
• Puppet server automation project
• Secure deployment of local AI (ChatGPT-like) with sandboxing & risk mitigation
• Advanced malware analysis & reverse engineering
• Compliance automation (GDPR, HIPAA, PCI-DSS)
• XDR / EDR comparison (HarfangLab, Defender, Trend Micro, etc.)
• SIEM comparison (Splunk, Sentinel, QRadar, ELK, open-source)
• MS PKI lab implementation
• Active Directory compromise & secure migration scenario
• Gamified social engineering awareness platform
• Social engineering awareness campaign design & execution

What You Will Gain

• Hands-on experience in enterprise-grade security environments
• Exposure to modern cloud & OT infrastructures
• Experience in automation & Infrastructure-as-Code
• Research & comparative analysis experience
• Mentorship from experienced security engineers

Profile Required

• Master’s or final-year Bachelor student in Cybersecurity, IT, Network Engineering, or related field
• Strong interest in cloud, network, and infrastructure security
• Analytical mindset and structured approach
• Ability to work independently and produce technical documentation
• Scripting skills (Python, PowerShell, Bash) are a strong plus
• Knowledge of cloud platforms (Azure, AWS, GCP) is an asset
• Familiarity with networking fundamentals (TCP/IP, firewalls, VPN, DNS)

Important Note

The internship subjects listed above represent apreliminary and non-exhaustive set of ideas.

We strongly encourage students to propose their own internship topics, particularly those aligned with:

• Emerging cybersecurity trends
• AI-driven security
• Cloud-native security innovation
• Automation and scalable security services

Thales, entreprise Handi-Engagée, reconnait tous les talents. La diversité est notre meilleur atout. Postulez et rejoignez nous !

Thales, entreprise Handi-Engagée, reconnait tous les talents. La diversité est notre meilleur atout. Postulez et rejoignez nous !