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Linux runs a huge portion of today's infrastructure because it gives administrators an unusual amount of control over the system. That control extends to networking, where almost every aspect of packet flow, routing, filtering, and interface behavior ...

A 16-year-old KVM vulnerability recently hit the news, and honestly? It's a healthy dose of reality. We like to think of our hypervisors as these impenetrable walls, but this is a reminder that VM isolation isn't a permanent guarantee. Even in the .. ...

One of the easiest mistakes to make in detection engineering is assuming a rule keeps working simply because nobody has touched it. Most of the time, nobody removes the rule. Nobody disables it. It just gets forgotten.

We often view OpenSSH security updates through the lens of standard patch management. When a new CVE hits, we scramble to update, check our versions, and return to business as usual. But recent vulnerabilities tied to distribution-added OpenSSH ...

Docker makes containers feel like separate, lightweight virtual machines. They have their own hostnames, processes, and networking--but are they actually isolated? Many administrators assume they are without ever verifying the boundaries. If you've . ...

Linux security teams are drowning. Patches, kernel updates, new CVEs every week. SSH exposed here, an old web service there, and a forgotten cron job running as root. On top of that, SIEM dashboards blink all day with alerts that all claim to be ...

Before you close out the week, check what still needs to be patched.

You're staring at a service or a cron job that's giving you a bad feeling. Stop. The most dangerous thing you can do right now is act on that gut feeling alone. Linux systems are inherently noisy--package managers, configuration management, and the . ...

If you think you know what's running on your Linux host, you're probably wrong. Not because you're bad at your job--but because the kernel is lying to you.

GitHub has become the latest delivery mechanism for malware aimed at security researchers.