Codenotary, leaders in assuring safe and secure use of AI, today announced the expansion of its free Linux security program to Debian and Ubuntu giving organizations access to the complete Codenotary security platform for their first 25 Linux machines at no cost, with no feature restrictions and no expiration date.

The expansion follows strong adoption of Codenotary’s free Linux security program for AlmaLinux announced in July, which has had more than 12,000 AlmaLinux instances registered. Based on that market response, Codenotary is extending the same free, full-featured security offering to Debian and Ubuntu.

“The AlmaLinux campaign demonstrated that removing the commercial barrier can dramatically accelerate the adoption of better Linux security,” said Dennis Zimmer, chief technology officer and co-founder, Codenotary. “We want Debian and Ubuntu users to have exactly the same opportunity. Install it, secure your systems and use it for as long as you need. With AlmaLinux, Debian and Ubuntu, we now cover the most important Linux distributions.”

Free Linux Security for Debian and Ubuntu

Unlike traditional offers that restrict functionality or expire after a short evaluation period, Codenotary’s free tier permanently covers the initial 25 Debian and Ubuntu machines in an organization. Customers only begin paying when they expand beyond 25 systems, while those initial machines maintain free use indefinitely.

Debian and Ubuntu are widely deployed across enterprise servers, cloud infrastructure, development environments, data centers and AI infrastructure. As Linux estates grow more complex, administrators need continuous visibility into vulnerabilities, patch status, operating system software inventories, and compliance across their systems.

The Codenotary security platform provides:

Continuous Linux security and vulnerability monitoring;
Patch management;
CIS Benchmark compliance monitoring to continuously assess systems against recognized security benchmarks;
Audit history to maintain a verifiable record of activity;
Autonomous security capabilities to help identify and respond to security issues;
Monitoring of AI agents in real-time, detection of anomalous behavior, identifying potential data leakage, enforcing runtime guardrails, and control of AI-driven actions before they become security incidents.

This initiative reflects Codenotary’s broader strategy of making enterprise-grade Linux security accessible to smaller organizations, individual teams and administrators while providing a straightforward path to larger deployments when their infrastructure grows.

Deployment requires a single static agent binary that communicates exclusively through outbound TLS connections and requires no inbound firewall exceptions. Organizations can enroll systems with a single command and begin monitoring their security posture within minutes.

The free Codenotary Linux security program for Debian and Ubuntu is available immediately here, joining the existing program for AlmaLinux users.

About Codenotary

Used by hundreds of customers worldwide – including the world’s leading banks, governments, and defense organizations – Codenotary delivers technology that enables secure and trusted agentic networks in the modern organization. For more information, visit www.codenotary.com.