Pexys IT Solutions Haute-savoie - Network and security

IT Security is a key issue.

Our expertise ensures greater reliability and optimal security for your computer network, protection of your data interchange on the Internet, on you companies’ sites and for mobile users. We inspect data streams on the basis of content retrieved on the web to filter out threats, and we install tools to control outbound data transfers, according to information sharing settings defined by you.

Our know-how encompasses the entire spectrum of computer network security internally and externally:

Pexys propose son expertise en réseau informatique et Sécurité

Firewall configuration, monitoring, reporting and maintenance.
Private networks, VPNs, multiple sites and VPN SSL for mobile users.
Strong user authentication, 1X access control
VPN-SSL solutions with two-factor authentication (for instance with Token)
Prevention of data leakage to prevent disclosure of sensitive information outside the company.
WAN optimization – accelerates applications and file transfers on WAN connections.
SSL Inspection (Https) – increases the security and control of rules for encrypted traffic data streams

Incident Response & Remediation

In the event of a security incident (ransomware, intrusion, phishing, etc.), a rapid intervention—either on-site or via secure remote access—is carried out following these key steps:

Diagnosis and identification of the incident,
Isolation of the compromised system to prevent further spread,
Removal of malware, ransomware, or malicious scripts,
Restoration from backup or full system rebuild,
Post-incident hardening: patching, network segmentation, and system security reinforcement,
A detailed technical report is delivered to the client with specific recommendations.

Recommendations & Best Practices

Following a contextual analysis of the information system (mapping, criticality, usage), several measures are systematically recommended:

Implement an incident response plan (BCP/DRP),
Raise employee awareness of major threats (phishing, passwords, USB devices, VPN use…) through regular training and a strong cybersecurity culture,
Deploy multi-factor authentication (MFA) and apply the principle of least privilege to limit access strictly to what is necessary,
Automate updates (systems, applications), perform regular audits, and remove obsolete versions,
Implement robust backups following the 3-2-1 rule: three copies on two types of media, with at least one immutable off-site, encrypted and regularly tested,
Segment networks and enforce filtering rules,
Enable monitoring and logging, and deploy an EDR/xDR solution,
Conduct post-incident audits and lessons learned: analyze root causes, improve processes and procedures, and equip your system to prevent recurrence.

Why This Approach?

It combines reactive intervention (diagnosis, cleanup, restoration) with proactive prevention (awareness, security, resilience),
It relies on proven, adaptable practices: simplicity, efficiency, and continuity,
It ensures a structured response to each incident while strengthening the overall resilience of your IT system.