Preventing prompt injection and token abuse in LLM integrations: a Chrome-extension example attack, then defenses including input validation, narrow prompts, output filters, token limits, rate limiting, and LangChain for pre/post-processing and usage tracking.
A blue-team walkthrough of the CyberDefenders XLMRat challenge: tracing the first-stage download URL and hosting provider from the PCAP, hashing the loader and executable payloads, and identifying the malware family and the LOLBin used for stealthy execution.
The hidden cost behind AI-assisted coding: the GPUs, power, and data-center infrastructure that make it work, whether current pricing reflects real demand, why providers lose money at scale, and what that means for you.
A blue-team walkthrough of the CyberDefenders BlueSky ransomware challenge: analyzing the PCAP to find the port-scan source IP, the targeted account, C2 process injection, the downloaded payload, and the registry keys used to disable Windows Defender.
A blue-team walkthrough of the CyberDefenders DanaBot challenge: using PCAP and threat intel to trace the initial-access IP, identify the malicious files and their SHA-256/MD5 hashes, and the process used to execute the banking trojan.
Practical, non-boring takeaways from NIST SP 800-190 for container security: image scanning and vulnerability management, controlled image provenance, least-privilege runtime restrictions, network segmentation, runtime threat detection, and host-OS hardening.
Building a homelab SSH jumphost that lets you pick any server from a fuzzy-finder (fzf) menu by friendly name instead of memorizing IPs, including the select-host script, autoload on login, and SSH key management.
A clear, visual explanation of the Proxmox VE firewall and its three layers (datacenter, node, and VM/container), how rules are matched in practice, and how to configure it on a single-node setup.
What passkeys are and why they are more secure and convenient than passwords: how the public-key authentication works, its security and usability advantages, and a quick guide to start using passkeys on iPhone and Mac.
Why software bills of materials (SBOMs) matter for security teams, managers, and developers, how to win management buy-in, and a short hands-on demo generating an SBOM in a GitLab CI pipeline.