LinuxSecurity.com

Every system admin has lived through the same Monday morning ritual. A queue of forty tickets, half of them password resets, permission errors, or disk space warnings that any experienced technician could resolve in under two minutes. The other half require actual judgment. For years, automation promised that software would eventually sort the two apart on its own. That promise is now being tested in production Linux environments.

You're running a web scraping project to collect pricing data from e-commerce sites. You set up a pool of datacenter proxies, launch your scripts, and within minutes — banned. CAPTCHAs everywhere. Your data pipeline stops before it really begins.

Business Email Compromise used to be a numbers game — mass-blasted emails, broken English, an obvious "URGENT WIRE TRANSFER" subject line. That era is over. Generative AI has turned BEC into a tailored, low-noise operation that mimics writing style, voice, and even video presence. This piece looks at what's actually changed under the hood, what defenders are testing in response, and why so many organizations are still structurally unprepared for it.

Linux operating systems have gained prominence due to their stability, adaptability, and excellent security options. In the case of developing documentation, designing cybersecurity dashboards, or educational material, visuals are of vital importance when it comes to making things clear. The use of icons allows one to understand the message regarding alerts, authorization, encryption, authentication, or the state of the system just by looking at the visual cue without having to read long desc...

For small security and IT teams, the "enterprise" dream of a fully automated SIEM often feels like a distant luxury. It’s a vision built on massive budgets and dedicated engineering teams—things that, frankly, most of us don't have. But here is the reality: you don’t need a six-figure platform to maintain a secure environment.

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 safe.

ESET researchers identified 11 old and forgotten Linux UEFI shim bootloaders at versions 0.9 and below that can be used to bypass UEFI Secure Boot on any UEFI-based machine that trusts Microsoft’s Microsoft Corporation UEFI CA 2011 third-party certificate authority, regardless of the installed operating system (OS). Reported shims can be exploited to execute untrusted code during system boot, enabling attackers to deploy malicious UEFI bootkits even on systems with UEFI Secure Boot enabled. 

Proxies are a standard component of a Linux administrator's toolbox. You can use them to see how services respond in various locations, to run route monitoring checks, and to retrieve public data for internal tooling. However, a proxy is an outbound tunnel with credentials attached, and on a multi-user server, it is a security risk that should be treated with the same caution as SSH or sudo. This post explains the practical measures that prevent a proxy setup from becoming a weak point in an ...

Before the week gets away from you, take a look at what's landed across the Linux ecosystem.  The volume of security advisories hasn't slowed, and while not every update demands an emergency maintenance window, several deserve to move to the top of your patch queue. This week's updates span the kernel, remote desktop infrastructure, VPNs, containers, browsers, and the utilities Linux systems quietly depend on every day.  Individually, these look routine. Together they show how quickly attacke...

Linux systems generate a steady stream of authentication, service, kernel, and application logs. On most systems, those logs never leave the machine that created them. If you're responsible for ten or twenty servers, that means checking each one separately. If one disappears before you can investigate it, its logs may disappear with it. Centralized logging solves that by sending log messages to another server as they're created. Instead of searching every machine, you have one place to review...

When researchers announced GhostLock, many people focused on the exploit. What stood out to me wasn't just what the vulnerability could do, but how long it had remained hidden. The flaw had lived in the Linux kernel for roughly 15 years before it was publicly identified by researchers. That means the flaw survived hundreds of kernel releases and years of upstream development before it was publicly documented. It raises an uncomfortable question about one of open source's oldest assumptions. O...

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 implementation, or revising it for days before anyone outside that community noticed it. None of those discussions are secret. They're sitting in mailing list archives, Git commits, and patch reviews where they've been the whole time. The strange pa...

Spin up a fresh Linux VPS with default settings and check /var/log/auth.log ninety seconds later. There will already be failed login attempts — not dozens, hundreds, sometimes before the deployment script has even finished running.

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 runners, or routine administrative automation. But among that noise, an attacker might be establishing a foothold, moving laterally, or setting up persistence. The challenge for any security team is: how do you separate the routine from the malici...

If you’re running Gitea in a container, stop what you’re doing and check your versioning right now. We’re looking at a critical vulnerability—CVE-2026-20896—shipped directly in Gitea’s official Docker images. It’s a 9.8 CVSS-rated "open door" that lets any unauthenticated attacker stroll in and impersonate any user on your system, admin account included, without needing a password or a token. The reality? This isn't some complex, low-level kernel exploit. It’s a classic "secure-by-default" fa...

There was a time when Linux meant server rooms and hobbyist forums. These days it's on regular laptops, and a big part of that is people getting fed up with commercial operating systems scraping their data, shipping telemetry nobody asked for, and boxing them into hardware ecosystems they can't opt out of.