Cloudflare outage knocks millions of websites offline

After outages in AWS and Azure last month, today a technical problem with Cloudflare, kocked out millions of websites offline, including X (Twitter), ChatGPT, Spotify, among others.

According to the company, the issue has now been resolved.

Sources:

https://www.businessinsider.com/cloudflare-outage-internet-down-x-open-ai-2025-11

https://www.bbc.com/news/articles/c629pny4gl7o

https://www.engadget.com/big-tech/cloudflare-hit-by-outage-causing-widespread-errors-124208302.html

National Cybersecurity Exercise 2025

I’m proud and honored to have participated in the National Cybersecurity Exercise 2025, organized by the Portuguese National Cybersecurity Centre, providing technical support for the team.

More information (in Portuguese):

https://www.itsecurity.pt/news/news/exercicio-nacional-de-ciberseguranca-testa-capacidade-de-resposta-no-setor-comunicacional

https://www.securitymagazine.pt/2025/11/12/na-ciberseguranca-nao-ha-concorrencia

Windows 11, version 25H2, now available!

Microsoft just released the new version of Windows 11, version 25H2!

This update will gradually be offered to current devices with Windows 11 or can be manually installed from scratch.

The ISOs and the Media Creator (to create the USB installer) can be downloaded from here:

https://www.microsoft.com/en-us/software-download/windows11

An IT pro’s guide to Windows 11, version 25H2

How to get the Windows 11 2025 Update

Oracle offering free courses and certificates!

Until the next October 31st, Oracle is offering 2 exam vouchers, so you can use them to get any of these certifications.

AI | Artificial Intelligence

OCI | Oracle Cloud Infrastructure

Multicloud

Data

Claim your vouchers here!

I just completed the course: Modern Project Management

I’m happy to report I just completed the 5-day course Modern Project Management, from António Soares Miguel, PhD, PMP, at Galileu / Rumos, in Lisbon.

In this training, exclusive to employees of the National Security Cabinet of Portugal and National Cybersecurity Centre of Portugal, we learned the theory of project management and we also practiced using Microsoft Project.

A big thank you to our teacher, António Miguel, and also to the National Security Cabinet of Portugal, for sponsoring and offering us this course.

Certificate

I just completed the course: Vulnerability Auditing

I’m happy to report I just completed the Vulnerability Audit course, from University of Coimbra and the National Cybersecurity Centre of Portugal, as part of the C-Academy training.

A two-week, 70 Hours, intensive couse, focused on detecting and mitigating vulnerabilities, and also compliance and regulatory frameworks, like ISO 27001.

Microsoft Security Summit Portugal

Just attended the Microsoft Security Summit Portugal, online.

A very interesting event, touching on a several subjects:

  • AI for Cybersecurity Defense
  • Zero-Trust
  • Regulation, compliance and sovereignty

Among the speakers, there was the Rear-Admiral António Gameiro Marques, que General-Director of the National Security Cabinet of Portugal.

If you want to watch a recording, its available here:

Microsoft Security Summit Portugal (Digital) – YouTube

I just completed the course: Introduction to Cybersecurity Awareness, from HP

I’m happy to report I just completed the course Introduction to Cybersecurity Awareness, from HP Life.

Course outline

Objective: Discover how to detect and defend against common cybersecurity threats to safeguard your digital information.

In this cybersecurity course, students will acquire the skills to:

  • Identify typical threats to online data and information
  • Implement basic measures to protect your sensitive data
  • Understand widely used cybersecurity terms

Certificate

I received a Commendation from the National Security Cabinet of Portugal

It was with pride that today I received, alongside my colleagues from the IT teams at the National Security Cabinet of Portugal and the National Cybersecurity Centre of Portugal, a collective Commendation, from the General Director, the Rear Admiral António José Gameiro Marques, recognizing our dedication and team work, with helped us to keep the IT infrastrucute fully online and operational, during the recent full blackout in Portugal and Spain.

Official Publication

Full document (PDF)