From Curious to Capable: A 90-Day Cybersecurity Study Blueprint

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Cybersecurity is more than just a profession—it’s a mindset and a mission in an ever-changing digital world. This 90-day roadmap breaks down essential cybersecurity skills into structured weekly modules, ensuring a solid foundation for beginners and career switchers alike.

You Should Know:

Week 1-2: Networking & Security+ Fundamentals

  • Key Tools & Commands:
    – `nmap -sV ` (Service version detection)
    – `tcpdump -i eth0 -w capture.pcap` (Packet capture)
  • Study Professor Messer’s Security+ videos (Free on YouTube)

Week 3-4: Linux Mastery

  • Essential Linux Commands: 
    grep "error" /var/log/syslog  Log analysis
chmod 600 sensitive.txt  File permission hardening
sudo apt update && sudo apt upgrade -y  System updates
  • Practice on OverTheWire Bandit (Linux security challenges).

Week 5-6: Python Scripting for Cybersecurity

  • Sample Script (Port Scanner): 
    import socket
target = "example.com"
for port in range(1, 100):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(1)
result = sock.connect_ex((target, port))
if result == 0:
print(f"Port {port} is open")
sock.close()

Week 7-8: Traffic Analysis

  • Wireshark Filters:
    – `http.request.method == “GET”` (Filter HTTP GET requests)
    – `tcp.port == 22` (SSH traffic)
  • TCPdump Command: 
    tcpdump -i eth0 'port 80' -w http_traffic.pcap

Week 9: Git Version Control

  • Key Git Commands: 
    git clone <repo-url>
git add .
git commit -m "Security script update"
git push origin main

Week 10: ELK Stack for SIEM

  • Elasticsearch Query: 
    {
"query": {
"match": { "event.type": "threat" }
}
}

Week 11: Cloud Fundamentals (AWS, Azure, GCP)

  • AWS CLI Command: 
    aws s3 ls  List S3 buckets

Week 12: Ethical Hacking (HTB & VulnHub)

  • Metasploit Command: 
    msfconsole
use exploit/multi/handler
set payload windows/meterpreter/reverse_tcp
set LHOST <your-ip>
exploit

What Undercode Say:

This 90-day blueprint is a proven path to cybersecurity proficiency. Hands-on practice with tools like Nmap, Wireshark, Python, and Metasploit is critical. Supplement learning with Hack The Box (HTB) and TryHackMe labs.

Prediction:

As cyber threats evolve, structured learning paths like this will become essential for aspiring security professionals. Expect more AI-driven security tools to integrate into such roadmaps.

Expected Output:

A skilled cybersecurity practitioner capable of handling real-world threats within 90 days.

Relevant URLs:

References:

Reported By: Dharamveer Prasad – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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