Discover why a cheap SSD can be a costly mistake. Learn the differences between SLC, MLC, TLC, and QLC cells, the risks of DRAM-less drives, and how to check your drive’s lifespan (TBW) before it fails.
Cheap SSDs: The Hidden Dangers of TLC, QLC & DRAM-less Read More »
If you manage a Zabbix environment, you’ve probably been there: a crowded “Problems” screen, where it’s hard to distinguish a critical production server from a forgotten test machine. In the past, we relied exclusively on Hostgroups to try to organize this mess. But in modern versions of Zabbix, there is a much more powerful and
Zabbix Tags Guide: Organizing and Filtering Monitoring Alerts Read More »
Let’s talk about one of the most primitive and, at the same time, most robust routing techniques: Flooding. Imagine you need to spread urgent gossip. You don’t choose a specific person; you shout to everyone nearby, and those people shout to the next ones, and so on. That is Flooding. 1. How does it work
Flooding Routing Algorithm: How It Works & Use Cases Read More »
If you have ever used a GPS to avoid traffic, you already intuitively understand the fundamental problem of computer networks. When you send a message, it needs to traverse a “web” of routers to reach its destination. But how do these devices decide where to go? Do they choose the path with the fewest cables?
Routing & Dijkstra’s Algorithm: Finding the Internet’s Shortest Path Read More »
Do you need your virtual machines (VMs) in VirtualBox to communicate with each other in isolation from your network and also isolated from the Internet? The “Internal Network” mode is the ideal solution for this scenario. Using VirtualBox in Internal Network mode is quite different from other network configuration forms in VirtualBox. For example, the
VirtualBox Internal Network: Setup & Isolation Guide Read More »
If you use Google Chrome on your computer or Android phone, stop what you are doing for a minute. Google has just issued an emergency alert affecting billions of users worldwide. This is not to cause panic, but to act fast. A new “invisible” security flaw has been discovered, and hackers already know how to
Urgent Security Alert: Update Google Chrome and Android Now (Zero-Day Exploit) Read More »
Text documents are extremely common attack vectors. Often, we receive a file that seems harmless but can hide malicious scripts (macros) or phishing links. In this tutorial, I will show how I performed a forensic analysis on an .odt (LibreOffice) file using only the Linux terminal. We will discover if the file has hidden macros,
ODT File Forensics: Detecting Macros and Phishing on Linux Read More »
Kali Linux is the standard Swiss Army knife for any cybersecurity professional. Its repository is vast, but here’s an inconvenient truth: not all tools are created equal. Many of them, although historically important, are now obsolete, noisy, or have simply been surpassed by much faster and more efficient alternatives. Using obsolete tools isn’t just inefficient;
5 Obsolete Kali Linux Tools and Their Modern Replacements Read More »
In recent weeks, this new banking trojan (malware focused on stealing bank data) has exploded in the country. Reports from companies like Kaspersky indicate tens of thousands of infection attempts, all starting the same way: a simple message on WhatsApp. The message, often coming from a known contact, contains a .ZIP file and a curious
Maverick Malware: Why the WhatsApp (.ZIP) Scam Only Works on a PC Read More »
If you are a Windows systems administrator or manage a company’s IT infrastructure, stop what you are doing and read this. Microsoft has just issued a security alert of the highest severity, requiring an “out-of-band” update (outside the normal cycle) for Windows Server Update Services (WSUS). The reason? A critical security flaw, tracked as CVE-2025-59287,
