Linux admins,

The hardest threats to stop are often the ones you never see. Modern attacks rarely announce themselves. They blend into normal activity, hide inside legitimate processes, and rely on gaps in monitoring to remain undetected.

This week, we're looking at two areas where better visibility can make the difference between a minor incident and a prolonged compromise.

Yours in Open Source,

Dv Signature Newsletter 2026 Esm W100

Dave Wreski, Founder

Linux IDS vs. IPS: Understanding the Difference

Many organizations deploy detection and prevention technologies without fully understanding where each fits into a security strategy. Knowing when to monitor, when to alert, and when to block is critical for protecting Linux environments.

→ Learn more about Linux IDS and IPS

Persistence Hunting: Finding What Attackers Leave Behind

Attackers often focus on maintaining access long after the initial compromise. Identifying persistence mechanisms early can help security teams uncover threats before they escalate into larger incidents.

→ Learn more about Linux persistence hunting techniques