Cybersecurity

Traditional AI, machine learning, and deep learning—whats the catch?

Traditional AI, or rule-based AI, relies on predefined logic and structured rules to process information and make decisions. It uses…

6 min read Feb 25, 2025

On Security public

CISSP Notes: 1.9 Risk management

Jonathan Peña

These are personal notes from my ongoing pursuit to obtain the CISSP certification sometime in 2025.

6 min read Dec 16, 2024

Kubernetes public

Bootstrapping an etcd Cluster for Kubernetes

Jonathan Peña

Your team is working on setting up a new Kubernetes cluster. Because etcd is one of the necessary components of…

3 min read Oct 3, 2024

Kubernetes public

Bootstrapping a Kubernetes Control Plane

Jonathan Peña

Context: Your team is working on setting up a new Kubernetes cluster. The necessary certificates and kubeconfigs have been provisioned,…

7 min read Oct 3, 2024

On Security public

Prepare for a Cyber Crisis Management Plan

Jonathan Peña

Overall Get Ready The goal of such a method is to provide guidelines for handling events or threats to the…

6 min read Sep 23, 2024

Kubernetes public

Bootstrapping Worker Nodes

Jonathan Peña

The process of setting up Kubernetes worker nodes involves configuring key services such as kubelet, kube-proxy, and containerd, alongside installing…

7 min read Sep 23, 2024

Kubernetes public

Generating Data Encryption at Rest

Jonathan Peña

Your team is working on setting up a Kubernetes cluster with two controllers and two worker nodes. In order to…

2 min read Sep 23, 2024

Kubernetes public

Generating Base Kubeconfigs

Jonathan Peña

In this lab walkthrough, your team is setting up a new Kubernetes cluster with two controllers and two worker nodes.…

4 min read Sep 19, 2024

Kubernetes public

Creating Self-Signed Certificates

Jonathan Peña

Your team is currently setting up a Kubernetes cluster that consists of two worker nodes and two controller nodes. Your…

7 min read Sep 6, 2024

Lets Defend public

SOC165 - Possible SQL Injection Payload Detected Walkthrough

Jonathan Peña

So let's start with the basics. You are on call, you receive this alert, the first question you…

5 min read Aug 27, 2024

Kubernetes public

Repairing Failed Pods

Jonathan Peña

In this hands-on exercise, we will troubleshoot a Kubernetes deployment issue within the web namespace. Starting with an overview of…

3 min read Aug 21, 2024

On Security public

Writing a Report on a Security Incident

Jonathan Peña

Reports must be written in a certain standard; the reader can guess whether the information they want is in the…

3 min read Aug 16, 2024

Cybersecurity Blog