Stay Ahead With Linux Security Features

More than 4,300 internet-facing devices have been pulled into a newly documented router malware campaign called AryStinger. The infected systems are mostly not enterprise servers. They are older routers, NAS appliances, and embedded Linux devices that stayed online long after anyone was likely checking them. . QiAnXin XLab researchers found that the campaign is leaning on known vulnerabilities, including flaws that have been public for years. That is the important part. AryStinger does not...

If more than 12 million enterprise systems can be exposed by flaws in a security control designed to harden Linux, it's probably worth asking whether Linux gives people a false sense of security. That's a question that has come up repeatedly throughout 2026. . This year alone, researchers have disclosed privilege-escalation vulnerabilities, root-level kernel flaws, and multiple supply-chain compromises affecting Linux environments. That doesn't mean Linux suddenly became insecure. It means...

A Linux server gets cleaned up after an intrusion. The suspicious process is terminated, credentials are rotated, and the system is rebooted during maintenance. Everything seems secure. A few hours later, the same outbound connection appears again. . Situations like that point to persistence . The attacker no longer needs the original exploit because something on the host continues restoring access behind the scenes. Finding that mechanism is often more important than understanding how the...

Building a SIEM is easier than scaling one. Most open-source deployments start as a simple "all-in-one" server. It is easy to set up, but that design rarely survives the transition from a lab to a production workload. . A SIEM watching 20 endpoints is not doing the same job as one watching 500. More endpoints mean more logs; more logs require more storage; more storage makes search heavier. Eventually, the very architecture that made your lab easy to deploy becomes the reason your production...

A newly disclosed attack technique called HTTP/2 Bomb is drawing attention because it targets the software that sits at the front of much of the Linux internet. Apache HTTP Server, NGINX, Envoy, and the ingress layers that many Kubernetes environments depend on can be forced into consuming disproportionate amounts of memory using relatively small amounts of attacker traffic. . For Linux administrators, the concern is not the HTTP/2 protocol itself. It is the possibility that a single...