open source

Nodepass: Open-source TCP/UDP tunneling solution
When you think of network tunneling, “lightweight” and “enterprise-grade” rarely appear in the same sentence. NodePass, an open-source project, wants to change that. It’s a …

Maltrail: Open-source malicious traffic detection system
Maltrail is an open-source network traffic detection system designed to spot malicious or suspicious activity. It works by checking traffic against publicly available …

Nagios: Open-source monitoring solution
Nagios is an open-source monitoring solution, now included as part of the robust Nagios Core Services Platform (CSP). It delivers end-to-end visibility across the entire IT …

Legit tools, illicit uses: Velociraptor, Nezha turned against victims
Threat actors are using an increasing variety of commercial and open-source products to carry out their attacks: according to researchers, Velociraptor and Nezha are the …

DefectDojo: Open-source DevSecOps platform
DefectDojo is an open-source tool for DevSecOps, application security posture management (ASPM), and vulnerability management. It helps teams manage security testing, track …

Proxmox Mail Gateway: Open-source email security solution reaches version 9.0
First released in 2005, the open-source Proxmox Mail Gateway has become a widely adopted mail proxy, positioned between the firewall and the internal mail server to stop …

OpenSSL 3.6.0: New features, crypto support
The OpenSSL Project has announced the release of OpenSSL 3.6.0, a feature update that brings significant functionality improvements, standards compliance, and a few key …

Chekov: Open-source static code analysis tool
Checkov is an open-source tool designed to help teams secure their cloud infrastructure and code. At its core, it’s a static code analysis tool for infrastructure as code …

The hidden risks inside open-source code
Open-source software is everywhere. It runs the browsers we use, the apps we rely on, and the infrastructure that keeps businesses connected. For many security leaders, it is …

Firezone: Open-source platform to securely manage remote access
Firezone is an open-source platform that helps organizations of any size manage secure remote access. Unlike most VPNs, it uses a least-privileged model, giving users only the …

Delinea releases free open-source MCP server to secure AI agents
AI agents are becoming more common in the workplace, but giving them access to sensitive systems can be risky. Credentials often get stored in plain text, added to prompts, or …

Kali Linux 2025.3 brings improved virtual machine tooling, 10 new tools
OffSec has released Kali Linux 2025.3, the most up-to-date version of its popular penetration testing and digital forensics platform. What’s new in Kali Linux 2025.3 Better …
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