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22. 04. 2026 Simone Ragonesi Offensive Security, Red Team, SEC4U

The Ghost in the Kernel Machine

There is a technology inside modern Linux systems that: It can do all of this (and much more) without the need of kernel modules;that technology is eBPF. The aim of this article is to provide an overview of the technology, present several use cases, and address potential misuse from an offensive security perspective. A Bit…

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19. 09. 2025 Alessandro Taufer Development, DevOps

How to Debug Your Kernel Calls

Unexpected reboots, who doesn’t love them? A few weeks ago, we faced a problem that any platform engineer dreads: one of our nodes rebooted unexpectedly. The cause? The iDRAC watchdog forcefully terminated it. But what led iDRAC to decide it was time to shut down the node? A preliminary investigation concluded that there wasn’t any…

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