I work directly on live Linux server incidents — from compromised systems and malware infections to high CPU usage, service crashes, and production outages. My focus is fast diagnosis, controlled recovery, and long-term hardening.
DevSecOps
Linux powers the internet. Cloud platforms, databases, APIs, web services, containers, and internal infrastructure all run Linux. That ubiquity makes it an enormous target. But the reason so many Linux servers get compromised isn't because Linux is inherently broken. It's because once a system is deployed,
Threat Intel
Disclaimer: I've spent the last two weeks writing about NGINX Rift, Fragnasia, and various Linux kernel catastrophes. Linux has been hogging all the vulnerability spotlight. So when a Windows BitLocker bypass drops this week, I'm covering it not because I suddenly became a Windows security expert,
Linux
QEMU 11.0 arrived after a four-release candidate cycle with significant architecture drops, improved VM migration, and expanded CPU/architecture support. The headline: 32-bit host support is gone, and several deprecated machine types have been removed. If you're running QEMU on legacy 32-bit hardware or
Linux
Canonical released Ubuntu 26.04 LTS (Resolute Raccoon) as the latest long-term support release. Shipping with Linux 7.0, APT 3.2's native rollback features, Wayland-only GNOME 50, and significant server component upgrades, this release targets systems wanting the latest technologies with 5–15 years of
Threat Intel
CRITICAL: A logic bug in the Linux XFRM ESP-in-TCP subsystem allows unprivileged local attackers to write arbitrary bytes to kernel memory and gain root privileges. It's been quietly disclosed, a working proof-of-concept exists, and all major Linux distributions are patching. If you're
Linux
With nginx's recent disclosure of multiple CVEs in the 1.27.x–1.30.x line (HTTP/2 request injection, buffer overflows in rewrite/SCGI/uWSGI/charset modules, HTTP/3 address spoofing, and a use-after-free in OCSP resolver), a lot of admins are stuck on Ubuntu&
Threat Intel
CRITICAL: A remote code execution vulnerability discovered in NGINX this week has been silently lurking in production for 18 years. It's pre-auth, remotely exploitable with a single HTTP request, and a working proof-of-concept exists. If you run NGINX anywhere — Plus, Ingress Controller, Gateway Fabric, App
Linux
A misconfigured /etc/network/interfaces on a remote Proxmox host means console-only recovery. Most of these gotchas don't surface during normal operation — they surface during dist-upgrade, after a reboot, or the first time a VM tries to migrate. Here's the list, ordered roughly by
DevOps
The engineering team behind Terraform by HashiCorp has introduced several major improvements to HCP Terraform and Terraform Enterprise focused on reducing operational overhead, improving governance, and strengthening infrastructure security across the entire lifecycle. The latest updates include: * Billable resource analytics (GA) * Project-level remote state sharing (GA) * Module testing for
DevSecOps
fail2ban works, but it scales badly. Every banned IP becomes a discrete iptables -A rule, and at a few thousand entries the rule chain becomes the bottleneck — every packet walks a linear list. nftables sets fix this with O(1) lookup, native timeouts, and atomic updates. No daemon required for
Linux
Hetzner's dedicated server networking trips up everyone the first time. The gateway isn't in the same subnet as the IPs you're assigning. Additional IPs are routed individually as /32s, not as a contiguous on-link subnet. The upstream switch MAC-filters by default, so
DevSecOps
Most sysadmins reach for AppArmor or SELinux when they want to confine a service. Both work, both have learning curves, and both expect either pre-shipped policies or substantial custom-rule writing. Meanwhile, systemd has shipped — for years — a sandboxing toolkit that gets you most of the protection with maybe