Marcelle Lee – Medium

Marcelle Lee

Weekly Cyber Threat Bulletin #001

10 July 2025

3d ago

3d ago

TryHackMe Walkthrough: Snapped Phish-ing Line

This is the second of my TryHackMe (THM) walkthroughs. THM is a fabulous platform for learning, with a wide variety of topics and skill…

Sep 4, 2023

TryHackMe Walkthrough: Snapped Phish-ing Line

Sep 4, 2023

TryHackMe Walkthrough: h4cked

This is the first of my TryHackMe (THM) walkthroughs. THM is a fabulous platform for learning, with a wide variety of topics and skill…

Aug 15, 2023

TryHackMe Walkthrough: h4cked

Aug 15, 2023

CTF Challenge Walkthrough: Network Traffic Analysis, 12 Challenges in one PCAP

It has been a while since I have posted a walkthrough and I was just thinking about this network traffic analysis challenge since I was…

Oct 25, 2020

CTF Challenge Walkthrough: Network Traffic Analysis, 12 Challenges in one PCAP

Oct 25, 2020

Kickstarting Your Career in Cybersecurity — Cyber Competitions

Author’s note: I originally published this article on LinkedIn. Since then, I have curated some competition-oriented resources on my…

Jul 13, 2019

Kickstarting Your Career in Cybersecurity — Cyber Competitions

Jul 13, 2019

Roam If You Want To…Travel Tips from 43K Feet

Traveling can be an adventure. It can also be a nightmare. Learning how to best navigate (pun intended!) is an essential part of making…

Jun 19, 2019

Roam If You Want To…Travel Tips from 43K Feet

Jun 19, 2019

CTF Challenge Walkthrough: Logical Operations

The challenge in this walkthrough asked for the result in decimal of 4A & 2D. Competitors typically attempt a mathematical addition…

May 19, 2019

CTF Challenge Walkthrough: Logical Operations

May 19, 2019

CTF Challenge Walkthrough: Network Traffic Analysis, Rogue User

In this walkthrough, we will be analyzing a packet capture (PCAP) file, rogue_user.pcap. The challenge was to identify the rogue user that…

Feb 27, 2019

CTF Challenge Walkthrough: Network Traffic Analysis, Rogue User

Feb 27, 2019

CTF Challenge Walkthrough: File Metadata

This is the second in my series of cyber competition challenge walkthroughs. As I’ve mentioned previously, Capture the Flag (CTF)…

Dec 17, 2018

CTF Challenge Walkthrough: File Metadata

Dec 17, 2018

CTF Challenge Walkthrough: Modified Header

This is the first of my promised Capture the Flag (CTF) cyber competition walkthroughs. I built the subject forensics-oriented modified…

Nov 25, 2018

CTF Challenge Walkthrough: Modified Header

Nov 25, 2018

Marcelle Lee

Marcelle Lee

Security researcher, educator and business owner in the field of cybersecurity. Advocate of diversity in tech. https://info.marcellelee.com/

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