linuxsecurity.com / .linuxsecurity-com-linuxsecurity-features

For years, we secured our Linux infrastructure by building walls: VPCs, security groups, and hardened SSH configurations. We treated the cloud like a virtual data center, assuming that if we kept the 'bad guys' out of the network, our workloads were ...

Most of us don't hear about a kernel vulnerability until a CVE lands in our inbox or the vulnerability scanner starts complaining. By then, the patch isn't new anymore. Kernel developers may have been passing it around for review, arguing over the .. ...

Every Linux server in your fleet produces thousands of events every minute. From journald logs and auditd records to kernel-level eBPF hooks, your systems are constantly talking. Most of that noise is just the mundane churn of system services, CI/CD ...

Security scanners flag exposed API keys in public repositories every day. The initial response is usually predictable: delete the commit, revoke the credential, and move on. That's a mistake.

Most of us think of Linux rootkits as ancient history--the stuff of 90s hacking forums and clunky malware that would crash your system if you looked at it the wrong way. But if you think they've gone away, you're mistaken. They've just gotten smarter ...

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 .. ...

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.

If you're relying on standard network logs to protect your Linux infrastructure, you're flying blind. Most organizations believe they have network security monitoring because they're capturing traffic, but they're actually just collecting noise. Real ...

SSH persistence usually does not look malicious at first. The login succeeds normally, the session opens cleanly, and the account already exists on the server, which is exactly why attackers continue using SSH keys after gaining a foothold on Linux . ...

Most security teams are locked into a perimeter-first mindset. They obsess over north-south traffic--the data hitting the edge--while ignoring the reality of the modern data center. Once an attacker gets a foothold, they don't stay at the edge. They ...