Mark Nimi

Cybersecurity Professional | Pentester | I help keep organizations secure by focusing on People, Process, and Technology.

[Mark Nimi @mark_nimi]

Day 7 | #30DaysOfTech
Week 1 at @TSAcademy: MISSION ACCOMPLISHED!
From mastering advanced search operators to diving deep into Linux & real-world breach analysis, it’s been a high-speed upgrade.
Thanks to tutor Favour Onoko for the mentorship.
#CyberSecurity #LearningWithTS

[Mark Nimi @mark_nimi]

CV Optimization masterclass today w/ Anointed Dada @TechSphereAcad!
Lessons:
Impact Formula: Action Verb + Task = Quantifiable Result.
ATS Defense: Removing tables & text boxes that cause parsers to fail.
Clean Layout: Tailored, metric-driven structures over generic summaries.

[Mark Nimi @mark_nimi]

Kicked off Ethical Hacking w/ @TechSphereAcad!
Lessons from the introduction:
-PTES & OWASP: Following industry standards for structured testing.
-Virtualization: Building isolated sandboxes for safe execution.
-NAT Network: Configuring subnets for lab safety.
#EthicalHacking

[Mark Nimi @mark_nimi]

They’re keeping the registration open until Wednesday if you wanna join. Here’s the link to register 👇🏿 https://t.co/rwk5m4e8Ye

[Mark Nimi @mark_nimi]

Before I even got the official flyer, my host told me they already exceeded the expected registrations—over 40 people signed up instead of just 25! I haven’t even shared this with my community yet, and they’re already locked in. See comment for link 👇🏿

[Mark Nimi @mark_nimi]

Unpacking Risk Management frameworks w/ Abby @TechSphereAcad!
Key takeaways from the lab:
The Equation: Risk = Threat X Vulnerability X Impact.
Methodologies: Moving from qualitative (H/M/L) to quantitative ($$$) scoring.
#TSAcademy #CyberSecurity #GRC #RiskManagement

[Tech Sphere Academy @TechSphereAcad]

TS Connect: Lagos Edition vibe check: Passed!😍

Spending time with our community was everything we imagined and more.

From the intense energy of the games to the karaoke sessions that turned into full blown concerts 😍😂

Seeing our community of learners and alumni have fun together was absolutely worth it!🌴🔥

[Mark Nimi @mark_nimi]

@MichaelMK001 @TechSphereAcad You will definitely catch up

[Mark Nimi @mark_nimi]

Moving from #SOC to #GRC with @TechSphereAcad.
Technically, many are still wrestling with Wazuh and Suricata agents, but the curriculum has moved.

Governance = Direction
Management = Execution
It’s not just about the tools; it’s about the system that holds them together.

[Mark Nimi @mark_nimi]

GRC class w/ @TechSphereAcad!
Key lessons:
🔹 Charter: The "Constitution" of security.
🔹 RACI: One person accountable, zero ambiguity.
🔹 Reporting: E.g. CISO reports to the Board, NOT the CTO.
🔹 KPIs: What gets measured gets managed.
#TSAcademy #CyberSecurity #GRC #Governance

[Mark Nimi @mark_nimi]

Attended a powerful webinar today w/ @Ace_Kyd: "Building a Future-Proof Tech Career: The AI Advantage"
Key Lessons:
🔹 AI is a tool, not a replacement—master it.
🔹 Adaptability > Fixed Skills.
🔹 Build in public to stay visible.
Thanks @TechSphereAcad for the insight!
#AI

[Mark Nimi @mark_nimi]

Toughest lab yet w/ Valentine @TechSphereAcad!
Attempting a full Wazuh SIEM deployment:
🔹 Server & Indexer on Kali Linux.
🔹 Agent installation on Ubuntu.
Installation is proving difficult, but troubleshooting dependencies is where the real skill is built. #Wazuh #SIEM #SOC

[Mark Nimi @mark_nimi]

IOCs w/ Valentine @@TechSphereAcad!
Alert vs IOC: Notification vs. Forensic Proof.
The Stack: Used VirusTotal, AbuseIPDB, Shodan, & URLScan to hunt malicious IPs/Emails.
Identity: Checking breaches via Have I Been Pwned.
Intel: The enemy (IOCs). Vulnerability: You.
#SOC #OSINT

[Mark Nimi @mark_nimi]

Yesterday's Class: Incident Response Deep Dive w/ Valentine @TechSphereAcad!
Key Takeaways
IR Framework Lifecycle:
🔹 Prep/Detect: SIEM alert validation.
🔹 Analysis: Evidence & log collection.
🔹 Escalation: Fast-tracking high-risk threats.
#TSAcademy #SOC #NIST #CyberSecurity

[Mark Nimi @mark_nimi]

SOC Deep Dive w/ Valentine @TechSphereAcad!
🔹 NSM: Traffic analysis.
🔹 IR: Rapid containment.
🔹 Forensics: Digital "CSI."
🔹 Compliance: Meeting standards.
Key Distinction:
📍 Threat Intel: Know the enemy (Ext).
📍 Vulnerability Mgmt: Know yourself (Int).
#CyberSecurity #SOC

[Mark Nimi @mark_nimi]

Deep dive into #SOC operations yesterday w/ Valentine Okpalanozie @TechSphereAcad!
🔹 Shifted from "Event" to "Investigation" focus.
🔹 AI clusters the noise so analysts can hunt real threats.
🔹 Compliance (GDPR/HIPAA) is a major driver for 24/7 monitoring.
#CyberSecurity

[Mark Nimi @mark_nimi]

@TechSphereAcad This comment is present.

[Mark Nimi @mark_nimi]

Today’s #Wireshark class w/ @FavourOnoko was a total brain-bender!
🔹 Analyzed raw packet captures.
🔹 Saw the TCP/UDP flow in real-time.
🔹 Mastered basic filters to find needles in the haystack.
#TSAcademy #CyberSecurity @TechSphereAcad

[Mark Nimi @mark_nimi]

Assignment Complete for @TechSphereAcad!
Built a startup LAN in Cisco Packet Tracer: 2 PCs, 2 Laptops, & 1 Server.
🔹 Configured central switching for data flow.
🔹 Managed logical IP addressing.
Business is ready for Monday!
#TSAcademy #CyberSecurity #Networking

[Mark Nimi @mark_nimi]

@arcknowledge_ Definitely

[Mark Nimi @mark_nimi]

Day 28 | #30DaysOfTech
Theory is the foundation, but the Command Line Interface (CLI) is where the real work happens. Today, I continued my deep dive into the Cisco Packet Tracer terminal, moving beyond basic connections to understand how we actually "talk" to the hardware.

[Mark Nimi @mark_nimi]

@mssethiviip Oh yeah