Welcome to VK9 Security

This site has been designed for sharing knowledge with all people interested in Cyber Security.

Red Team

Content about penetration testing techniques. Such as:
Information Gathering (Active & Passive)
Post Exploitation
Vulnerability analysis and testing
Remediation & Best practices

Blue Team

We also offer content related to Blue Team techniques, such as:
Device Configuration
Hardening devices
Incident Response
Threat Hunting


Also learn to configure and design some of the labs to practice on.
Windows/*nix configuration

About the team

Our mission is to help professionals secure and test systems against cyber attacks, as well as improve technical skills. We are not responsible for the use of the material shared here.

Bryan Alfaro


Vry4n is a Security Engineer, focused on Offensive/Defensive techniques.

"I believe that knowledge should be free shared with world."

Recent Activity

Kerberos Service Principal Name (SPN) Lab

Having already set up Active directory as per (https://vk9-sec.com/active-directory-dns-lab/). We can set up the SPN service for testing purposes. To use Kerberos authentication requires both the following conditions to be true: The client and server Read more…

Exploiting mRemoteNG

mRemoteNG (mremote) is an open source project (https://github.com/rmcardle/mRemoteNG) that provides a full-featured, multi-tab remote connections manager. It currently supports RDP, SSH, Telnet, VNC, ICA, HTTP/S, rlogin, and raw socket connections. Additionally, It also provides the Read more…