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NiceTryGPT: Less pattern matching. More actual hacking.

I built NiceTryGPT, an open-source project for CTF authors who want to make cheap LLM shortcuts less effective without making challenges harder or more annoying for humans. The idea is simple: «Increase uncertainty, not complexity.» NiceTryGPT keeps the same vulnerability and learning objective, but removes obvious patterns that can turn a challenge into a one-shot LLM answer. Current examples…

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[Lab Notes] Kubernetes the Hard Way, For Real This Time (Step 07)

Continuing my Kubernetes the Hard Way homelab build. Steps 01-06 are already done, this covers step 07. Original guide: 07-bootstrapping-etcd.md Thoughts I had while doing this This step sets up the…

  • Etcd cluster set up in Kubernetes the Hard Way step 07
  • Transferred etcd and etcdctl binaries to server node
  • Verified etcd running as single-member cluster named controller

Cisco Secure Firewall Management Center sftunnel Flaw (CVE-2026-20324) Explained

Cisco Secure Firewall Management Center sftunnel Flaw (CVE-2026-20324) Explained Overview CVE-2026-20324 is a critical vulnerability in the sftunnel component of Cisco Secure Firewall Management…

  • Unauthenticated remote attacker can execute arbitrary code with root privileges on affected system.
  • Fixed in September 2026 update wave; no workaround available.

Why I Built Another In-Memory Cache for Go

There are already several good in-memory cache libraries for Go. So when I started building pacecache , the obvious question was: Why another one?

  • Author questions necessity of another Go in-memory cache despite existing options
  • Segmented cache reduces contention but enforces local capacity and uneven eviction

CSS Box Model

The CSS Box Model describes how every HTML element is treated as a rectangular box. Components of the Box Model The CSS Box Model has 4 main components : Content: The actual text, image, or other…

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