Security Audit
IT infrastructure and digital practices assessment, vulnerability identification, and concrete recommendations to improve the security level.
Let's discuss your needs
Stefan ANTUN - IT & Cybersecurity Specialist
Email: stefan@antun.ch
Phone: +41 22 567 01 05
Interventions in Geneva and surrounding areas.
Download my contact cardServices & Expertise
I assist my clients in strengthening their system security, improving their infrastructure resilience, and adopting tools better suited to their requirements for confidentiality, continuity, and operational control.
Data Protection
Implementation of backup, recovery, and data protection strategies to limit the impact of a technical incident or cyberattack.
Virtualization & High Availability
Deployment and administration of virtualized environments (Hyper-V, Proxmox) and resilient storage solutions for critical services.
Automation & Containerization
Modernization of IT environments through task automation (Ansible, PowerShell) and container technologies (Docker, Podman).
Network Configuration
Design, optimization, and hardening of local networks, Wi-Fi, VPNs, and mesh environments to improve performance and access control.
System Recovery
Intervention after a failure, compromise, or major incident, with system restoration and support to reduce the risk of recurrence.
Confidentiality, control, and digital autonomy
More controlled solutions for your tools and data
Many organizations today want to better understand where their data resides, how their services operate, and to what extent they can change tools or providers without excessive dependence.
- Reduce dependence on a single provider
- Improve visibility over data flows and access
- Limit the effects of policy, license, or product changes
- Strengthen confidentiality and compliance
- Implement sustainable technical solutions adapted to the context
The goal is not to replace everything, but to make coherent, progressive, and sustainable technical choices.
Custom Domain Email
A professional or personal email address based on your own domain name, for more freedom in choosing or changing providers.
- Domain registration (.ch, .com, etc.)
- Custom email address configuration
- Migration from Gmail, Outlook, and other services
- Possibility to evolve towards self-hosting
An email address linked to your domain offers more continuity and freedom of choice.
Privacy-oriented Mobile Configuration
Configuration of Android phones compatible with a more demanding approach to privacy and security (e.g., GrapheneOS).
- Initial installation and setup
- Daily use support
- Selection of privacy-respecting applications
- Adapted backup strategies
A controlled mobile environment helps limit the unnecessary exposure of personal data.
Linux Workstation
Installation and configuration of a Linux environment for people wanting a more transparent, stable, or customizable system.
- Linux installation
- Dual boot or Windows virtualization if needed
- Data migration
- Basic hardening and backups
- Training and support
The transition can be done progressively, according to your usage and operational constraints.
Self-hosted Services and Personal Cloud
Deployment of services hosted locally or on an infrastructure chosen by the client, for more control over the digital environment.
- Home server or small structure setup
- File storage and synchronization
- Secure remote access and password manager
- Collaborative tools
- Encrypted off-site backups
Each solution is scaled according to needs and availability requirements.