LinuxSecurity.com

People often think of containers as locked boxes that keep software separate from the rest of the computer. In reality, that safety depends on a chain of digital gatekeepers. If one gatekeeper misses a signal, the whole box opens up.

The Common Unix Printing System (CUPS) still sits on millions of Linux systems, usually in the background, rarely monitored, and often trusted more than it should be. We saw a wake-up call in late 2024 when a series of vulnerabilities revealed how printer auto-discovery could be abused to enable remote code execution.

The first week of April 2026 marked a significant escalation in supply chain tactics. A coordinated campaign involving 36 malicious npm packages, disguised as Strapi CMS plugins, was uncovered by security researchers.This was not a broad, opportunistic "grab" for credentials. Forensic evidence, including hardcoded credentials and internal hostname checks, reveals a surgical strike against the cryptocurrency platform Guardarian. By weaponizing a trusted development workflow, attackers achieved a total compromise. Moving from initial execution to database theft and long-term persistence in minutes.

Running npm install is a reflex at this point. You see a progress bar, a few hundred dependencies fly by, and the lockfile updates. You move on to the next task.But that command isn't just a file transfer. It is execution. And it runs with the same user permissions you use to check your email or push to production. The most dangerous code on a Linux system may execute before your application even starts.The recent npm supply chain attack on the Axios library showed how easily a postinstall script is weaponized. By exploiting npm lifecycle scripts , attackers turned a trusted utility into a delivery mechanism for a remote access trojan (RAT). This isn't about a bug in the code. It is about how the installation process is designed to work.