Linux admins,

Some of the most damaging incidents start with software you already trust. A compromised package, a vulnerable dependency, or a routine task running in the background can provide access long before anyone notices.

This week, we're looking at two areas that deserve closer attention.

Yours in Open Source,

Dv Signature Newsletter 2026 Esm W100

Dave Wreski, Founder

IronWorm: How a Supply Chain Attack Stole Linux Credentials

A recently uncovered campaign targeted developers through trusted software packages, harvesting credentials and tokens from Linux systems. The attack highlights how quickly a compromised dependency can turn into a broader environment-wide problem.

→ Read about the IronWorm supply chain attack

Cron Jobs: The Persistence Mechanism Everyone Forgets

Cron is a normal part of Linux administration, which is exactly why it remains a common place to hide malicious persistence. Knowing where to look and what stands out can help uncover unauthorized access before it becomes a long-term foothold.

→ Learn how attackers use cron jobs for persistence