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How I passed the AZ-500 exam

In July 2021, I have published a write-up about passing the AZ-104 exam. This time I want to talk with you about the AZ-500 exam. I have taken the AZ-500 exam today and passed the exam with 827/100...

PowerShell Script for SPF, DKIM and DMARC validation

To protect your email domain against cybercriminals it’s important that you configure SPF, DKIM and DMARC records on your email domain. As an IT Security Engineer, I do also the configuration of SP...

RDP Connections from Microsoft.Tri.Sensor.exe

In a network environment in one of our customers, we are using a Network Intrusion Detection System (NIDS). After deploying Defender for Identity (formerly known as Azure ATP) on one of our Domain ...

How I passed the AZ-104 exam

How I passed the AZ-104 Exam Study to learn, not only to pass the exam T13nn3s A little different write-up this time, no write-up from Hack The Box, but from how I passed the AZ-104 Exam f...

How to dump LSASS with ProcDump

  Attention! This article is for educational purposes only! I do not encourage you to run this to a machine you do not have permission to run. Performing these actions without permission can l...

Azure – Seamless single sign-on Roll Kerberos decryption key(s)

To fast rollover the Kerberos decryption key(s), you can use this Powershell script: https://github.com/T13nn3s/microsoft/blob/main/security/SSOSeamlessKeyRollover.ps1. In this article, we do a ...

Disable Legacy Authentication Microsoft 365

The threat landscape is constantly changing. Cybercriminals are resourceful and try every time to find new entrances to their victims for taking over the user account. Multi-Factor Authentication p...

Hunting down Microsoft Exchange 0-day

On the 2nd of March 2021, our security team got a notification from Microsoft that they will release out-of-band security updates for Microsoft Exchange Server. After getting more information it tu...

Bug Bounty Kibana Unauthenticated Kibana Log Server

Hi everyone! Greetings and welcome to my first bug bounty write-up. I’ve entered bug bounties in November 2020. This bug was an unauthenticated Kibana server exposed to the internet. Kibana is an ...

Beyond Advent of CTF 2020

Best wishes for 2021! The last month of 2020, the month of December, was dominated by the various Capture The Flag (CTF) competitions. If you’re not familiar with CTF, I give you a short explanati...