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Summary The Red Alert ICS CTF is an annual CTF held by NSHC Security at DEF CON. During DEF CON 31, our team won the CTF, earning a DEF CON Black Badge.  The CTF had a challenge titled OPC-UA. The challenge prompt was as follows: A PLC that sends strange ...

Summary The Red Alert ICS CTF is an annual CTF held by NSHC Security at DEF CON. During DEF CON 31, our team won the CTF, earning a DEF CON Black Badge.  The CTF had a challenge titled ECDH. The challenge prompt was as follows: You have obtained the criti...

Summary If you prefer to use Docker over Podman in Fedora CoreOS, use the Butane file below to add the latest version of Docker and Docker Compose v2 to your system. Details Butane variant: fcos version: 1.4.0 passwd: users: - name: core s...

Summary This page explains the process of importing VMs from TrueNAS Core, which uses FreeBSD's Bhyve for virtualization, to Proxmox. Details Proxmox In Proxmox, create a new VM and note its VM number. When creating the VM, follow these guidelines: In the...

Photo by Nadin Sh from Pexels. The photo represents my feelings about DevOps and related tooling.

Attached in the top left is a product I wrote that introduces space system vulnerabilities to cybersecurity professionals looking to get started in the space enterprise. The following is a recorded talk I gave at KringleCon using these slides: https://youtu.be...

SUBSTANTIAL REVISION: Issue #15526 has been patched in ZFS versions 2.2.2 and 2.1.14, according to open source reporting. The mitigation below only applies to older versions of ZFS. Summary A silent data corruption bug exists in ZFS versions 2.1.4 up to 2.1....

Summary This is a coauthored article by Ryukodev and myself. While this feature is undocumented, it is possible to use a smart card to authenticate to a Git repository behind Mutual Transport Layer Security (mTLS). This product describes how to do this given...