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Sunday Ojeka, Lekki Lagos, Lagos (2026)

27/02/2026

Just attended an insightful webinar with on Personal Branding vs Freelancing, led by Eric Gugua

Big lesson:
Personal branding isn’t about selling services, it’s about selling trust.
Your reputation gives you a voice.

Key reminders:
• Personal branding takes time
• Reputation must come before visibility
• Storytelling follows a sequence: identification → formation → telling

Powerful takeaway:

“Some of us are too smart for a dumb world.”
In my own words: Don’t be too smart for a smart world.

Grateful for the clarity shared today. 🚀

27/02/2026

🔎 Day 12 of My 30-Day Cybersecurity Learning Challenge

Today I learned about Indicators of Compromise (IOCs), hashing, and threat hunting, key areas used by analysts to detect and investigate intrusions.

Key takeaways:
• 🚨 IOCs such as account lockouts, exceeded login attempts, impossible travel, and missing logs can signal an intrusion
• 🔐 Hashing helps verify integrity (SHA-256 preferred; MD5 has collision issues)
• 🕵️ Threat hunting can be reactive or proactive, helping reduce time to identify and contain threats

Learning in progress with

On to Day 13 🚀

26/02/2026

🧠 Day 11/30 with TS Academy

Today’s focus was on the MITRE ATT&CK Framework a powerful framework that helps security analysts understand how attackers operate step by step.

I learned about:

🔹 Tactics
The goal of an attacker, what they are trying to achieve at each stage of an attack (e.g., gaining access, staying hidden, stealing data).

🔹 Techniques
The methods attackers use to achieve those goals, such as phishing, credential abuse, or malware ex*****on.

🔹 Attack Progression
How attackers move through a system in phases, not randomly, and how recognizing these patterns helps analysts detect and stop attacks earlier.

Understanding MITRE ATT&CK helps me think like a defender, recognizing attacker behavior, mapping alerts to known techniques, and responding more effectively in a SOC environment.

TS Academy

25/02/2026

Day 10/30 with – Alert Triage 🛡️

Today’s focus was on understanding how alerts are evaluated and prioritized in a SOC environment.

📘 Learnings:

• True Positive vs False Positive
• Severity Levels (SEV1–SEV3)
• Why context matters in alert analysis

I learned how false positives can slow down security teams, while false negatives can allow real threats to slip through unnoticed. Proper triage helps analysts focus on what truly matters.

🧪 Practice:

LetsDefend → Introduction to SIEM Alerts

Each alert tells a story, the job is knowing when it’s noise and when it’s a real threat.

24/02/2026

Day 9 of My 30-Day Cybersecurity Learning Challenge with TS Academy

SIEM Fundamentals with LetsDefend 🔐📊

Today’s learning on Let’sDefend deepened my understanding of how SIEM works behind the scenes and why it’s critical in modern SOC operations.

Here are my key takeaways:

🔹 SIEM Introduction
SIEM (Security Information and Event Management) helps organizations collect, correlate, and analyze logs from multiple sources to detect threats in real time.

🔹 Log Aggregation & Parsing
Logs from different systems are first sent to a log aggregator, where they are filtered and parsed into structured formats. This makes analysis, correlation, and alerting possible.

🔹 Long Tail Analysis
One major insight:
➡️ The least common events are often the most useful.
Rare or unusual activities usually indicate potential threats that deserve closer attention.

🔹 Attack Correlation – Brute Force Example
A strong brute-force indicator is:
✅ Multiple failed login attempts within a short time from the same IP address

This session really connected the dots between raw logs and real-world attack detection.

Still learning. Still building. One day at a time. 🚀

23/02/2026

🖥️ Day 8 of My 30-Day Cybersecurity Learning Challenge with

Today’s focus was on Security Operations Center (SOC) Workflow, understanding how security teams detect, analyze, and respond to threats in real-world environments.

I learned about SOC operations through and gained clarity on how security events are handled from start to finish.

Key topics I covered include:

🔹 SOC Workflow Overview
Understanding how a SOC functions as a central hub for monitoring, detection, and response.

🔹 Alert → Triage → Investigation → Escalation
Learning the step-by-step process analysts follow:
• Alerts are generated from security tools
• Triage determines severity and legitimacy
• Investigation uncovers root cause and impact
• Escalation ensures serious threats are handled appropriately

🔹 Analyst Responsibility & Decision-Making
Understanding how SOC analysts prioritize alerts, reduce false positives, and protect the organization in real time.

This session helped me understand how theory turns into action inside a SOC and why structured workflows are critical for effective incident handling.

On to Day 9 — SIEM fundamentals and how alerts are generated 🔍🚀

22/02/2026

📘 Day 7 of My 30-Day Cybersecurity Learning Challenge with TS Academy

Today was all about review, reflection, and consolidation, taking time to reinforce everything I’ve learned so far and connect the dots.

Over the past week, I’ve built a solid foundation in:

🔹 Cybersecurity Fundamentals
Understanding what cybersecurity is, why it matters, and the role of a Cybersecurity Analyst.

🔹 Networking for Security Analysts
Learning how data moves across networks, network topologies, and why understanding normal traffic is critical for threat detection.

🔹 Operating Systems & Security Basics
Exploring Windows and Linux fundamentals, logs, processes, and core security principles like the CIA Triad and least privilege.

This review helped me see how these areas work together in real-world security operations, from identifying suspicious behavior to responding effectively to incidents.

Week 1 complete ✅
On to Week 2 diving deeper into SOC operations, monitoring, and threat detection 🚀

22/02/2026

No pressure, just progress.

21/02/2026

🛡️ Day 6 of My 30-Day Cybersecurity Learning Challenge

Today’s focus was on Cybersecurity Fundamentals and Defensive Principles, the core concepts that guide how systems, data, and users are protected.

I learned and reviewed key topics such as:

🔹 CIA Triad (Confidentiality, Integrity, Availability)
Understanding the foundation of security and how every control, policy, and decision ties back to these three principles.

🔹 Authentication vs Authorization
Learning the difference between verifying identity and granting access, and why mixing them up creates security gaps.

🔹 Least Privilege & Access Control
Understanding why users and systems should only have the access they need, reducing the impact of potential breaches.

As a cybersecurity analyst, these principles shape how you analyze risks, investigate incidents, and recommend security controls. Strong fundamentals lead to effective defense.

This learning challenge is part of my continuous training and self-development with TS Academy

On to Day 7. Review, reflection, and reinforcing everything learned so far 🔍

20/02/2026

🚨 Day 5 of My 30-Day Cybersecurity Learning Challenge

Today’s focus was on Cyber Threats and Attack Types, understanding how attackers think, operate, and exploit systems.

I learned and reviewed key topics such as:

🔹 Malware Threats
Understanding different forms of malware including viruses, trojans, ransomware, and how they impact systems and data.

🔹 Phishing & Social Engineering
How attackers manipulate human behavior through deceptive emails, messages, and links to gain unauthorized access.

🔹 Brute Force & Credential-Based Attacks
Learning how attackers attempt to gain access using weak or compromised credentials and how analysts detect such activities.

As a cybersecurity analyst, recognizing these threats is critical. You can’t defend effectively if you don’t understand the tactics attackers use and the indicators they leave behind.

This learning challenge is part of my continuous training and self-development with TS Academy

On to Day 6 — Security fundamentals and defensive principles 🛡️

19/02/2026

Day 4 – Logging Fundamentals 🔍
30 Days Cybersecurity Challenge with TS Academy

Today I learned why logs are critical in cybersecurity.

Logs help us:
• Record past events
• Troubleshoot issues
• Optimize performance
• Perform security & trend analysis

Logs tell us:
• What happened
• When it happened (timestamps)
• Where it happened (IP, MAC, host)
• Who was responsible
• The nature of the event

I also explored different log types (application, security, system, network, web, etc.) and the basics of log collection, centralization, and analysis.

Key takeaway: No logs = no visibility.

18/02/2026

🛡️ Day 3 of My 30-Day Cybersecurity Learning Challenge

Today’s focus was on Operating Systems for Cybersecurity Analysts, understanding how systems work under the hood and how analysts investigate activity within them.

I covered key topics including:

🔹 Windows Operating System Fundamentals
Understanding Windows architecture, user accounts, permissions, and where security events and logs are generated.

🔹 Linux Operating System Basics
Learning the Linux filesystem, users and permissions, and essential command-line concepts that analysts use during investigations.

🔹 Processes, Services, and Logs
Exploring how processes run, how services start, and why logs are critical for detecting suspicious or malicious activity.

As a cybersecurity analyst, knowing how operating systems function is essential. Attackers interact with the OS, and defenders must understand it even better to detect, analyze, and respond to threats.

This learning challenge is part of my continuous training and self-development with TS Academy

On to Day 4 — Logs and why they matter in security investigations 🔍

Sunday Ojeka

27/02/2026

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