Lester Obbayi

Lester Obbayi is a Cyber Security Consultant with one of the largest Cyber Security Companies in East and Central Africa. He has a deep interest in Cyber Security and spends most of his free time doing freelance Penetration Tests and Vulnerability Assessments for numerous organizations.

Articles from Lester Obbayi

A brief introduction to the Nessus vulnerability scanner

July 27, 2019

Nessus is one of the many vulnerability scanners used during vulnerability assessments and penetration testing engagements, including malicious attacks. This

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Computer forensics: Chain of custody [updated 2019]

July 6, 2019

In this article, we will learn what the chain of custody entails in digital forensics and how it is maintained. We’ll also look at the chain of custody proce

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Ransomware analysis with Volatility

June 24, 2019

In this article, we’ll discuss the Volatility framework and how to perform analysis on ransomware using it. We’ll discuss various capabilities of the tool th

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The future of employee monitoring

June 18, 2019

Introduction In this article, we discuss employee monitoring inside and outside the workplace. We’ll look at current capabilities and challenges faced by the

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Threat hunting with Cymon API

June 6, 2019

Introduction In this article, we’ll discuss mock intrusion attempts on our systems and show you how to make use of Cymon API to query important information

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Threat hunting with Graylog

May 9, 2019

Introduction Graylog is a leading centralized log management solution which allows security teams to log, store and analyze huge amounts of data. One area w

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Wireless Security Guide: Introduction to LEAP Authentication

March 20, 2019

Introduction The LEAP (Lightweight Extensible Authentication Protocol) is a communications protocol that was developed by Cisco for use in point-to-point con

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Exploring Commonly-Used Yet Vulnerable Components

February 20, 2019

Introduction In this article, we will explore some technologies that are commonly used today despite being known to be vulnerable. We’ll discuss why these te

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Quick and dirty BurpSuite tutorial

February 19, 2019

In this article we look at BurpSuite, a framework of tools that can be used during penetration testing. We’ll cover the latest release of BurpSuite, version

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Introduction to the mobile application penetration testing methodology [Updated 2019]

January 19, 2019

The Mobile Application Penetration Testing Methodology (MAPTM), as described by author Vijay Kumar Velu in his ebook, is the procedure that should be followe

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Threat Hunting: Data Collection and Analysis

November 30, 2018

Introduction Threat hunting requires proactively looking within the network and searching for anomalies that might indicate a breach. The vast amount of data

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Threat Hunting: Detecting Adversaries

November 30, 2018

Introduction Threat hunting requires that the hunter understand the mind of the adversary and seek to take out attacks before the hunters can themselves be d

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