Having spent a good amount of time exploring different cybersecurity labs and certifications, I can confidently say that Certified Red Team Professional (CRTP) by Altered Security stands out as one of the most practical and hands-on learning experiences I've had.

From the moment I logged into the lab environment, it was clear that CRTP is not just another "read and regurgitate" certification. It's built for practitioners—people who want to understand how Active Directory attacks actually work in the real world, not just in theory.

✅ What I Loved About CRTP

• Realistic Lab Environment: The lab is incredibly well-designed to mimic enterprise Active Directory setups. It includes everything from misconfigurations to common privilege escalation paths, lateral movement opportunities, and more.
• Step-by-Step Learning: The course materials are detailed and approachable. Each concept—whether it’s Kerberoasting, ACL abuse, or delegation attacks—is clearly explained and tied directly to a practical lab exercise.
• No Fluff, All Action: This course doesn't waste your time. It dives straight into attacks that are both relevant and frequently seen in red teaming engagements.
• Challenging but Fair Exam: The exam was hands-on, time-bound, and thoroughly tested my understanding. It's not just about remembering commands—it's about applying your knowledge strategically under pressure.

💻 What Makes CRTP Stand Out

From the beginning, the CRTP lab experience felt realistic and professionally designed. The course dives deep into the offensive side of Active Directory—a critical area for any red teamer or penetration tester. Instead of abstract theory, the focus is on realistic attack paths and live hands-on exploitation.

🧠 How I Prepared for the CRTP Exam

Here’s how I structured my preparation for the CRTP exam, both using the official lab and external resources:

1. Studied the CRTP Course Material Thoroughly

I took my time going through the official CRTP slides and videos. The concepts around:

• AD enumeration
• Kerberoasting and AS-REP roasting
• GPO abuse