emdeh’s Substack | Substack

Linear Transformation and Matrices

Matrix addition and, scalar and square matrices multiplication.

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HTB Machines

Exposed APIs, session hijacking, and sudo misconfiguration.

Jun 10, 2024 • emdeh

Default credentials and reused passwords, unpatched vulnerabilities, and SUID Binaries.

Jun 10, 2024 • emdeh

Remote File Inclusion and poor application control.

Jun 1, 2024 • emdeh

XSS, SSTI, and Sudo abuse.

May 27, 2024 • emdeh

XSS, Command Injection, and Sudo abuse.

Apr 15, 2024 • emdeh

Insecure File Uploads, Business Email Compromise, and kernel exploits.

Apr 8, 2024 • emdeh

Arbitrary code execution and stealing hashes.

Jan 24, 2024 • emdeh

Authentication bypass and SSRF.

Jan 22, 2024 • emdeh

Artificial Intelligence

Regression Models and Evaluation Metrics in Machine Learning

A high-level overview of Linear Regression and common evaluation metrics.

Jun 11, 2024 • emdeh

Transformer architecture and self-attention

A brief overview

Mar 18, 2024 • emdeh

Optimising LLM Performance

A discussion on a few techniques to maximise LLM performance.

Mar 5, 2024 • emdeh

Using Retrieval Augmented Generation (RAG) for chatbots

A simple example of how RAG can be used for a website's chatbot.

Feb 16, 2024 • emdeh

Essential Eight Series

Application Control

Assessing Application Control.

Jan 24, 2024 • emdeh

Assessment planning and scoping

The four stages of assessment

Nov 24, 2023 • emdeh

Overview of Essential Eight

Where did the Essential Eight come from, and who's it for?

Nov 19, 2023 • emdeh

Essential Eight Explainers

An overview of the ASD's Essential Eight strategies to mitigate cyber security incidents.

Oct 29, 2023 • emdeh

Explainers

Linear Transformation and Matrices

Matrix addition and, scalar and square matrices multiplication.

Aug 20, 2024 • emdeh

Linear Combination

Span and Basis Vectors, and linear (in)dependence.

Aug 19, 2024 • emdeh

Vectors in Linear Algebra

Magnitude, Direction, Transpose, and Operations in Field.

Aug 19, 2024 • emdeh

Malicious Time-to-Live (TTL) manipulation

A high-level explanation on malicious TTL manipulation and packet fragmentation.

Mar 17, 2024 • emdeh

Library

Tracers in the Dark: The Global Hunt for the Crime Lords of Cryptocurrency

By Andy Greenberg

Oct 27, 2023 • emdeh

Awareness of bias in datasets and downstream applications is commonplace, but what about bias impacting the value systems developed to protect the data…

May 27, 2023 • emdeh

Fancy Bear Goes Phishing

By Scott J. Shapiro

Apr 27, 2023 • emdeh

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