FIELD NOTES / OZLIN INFO
Blog
Practical notes on AI automation, secure web delivery, cybersecurity, document processing and game-development R&D. Older articles are being reviewed, sourced and updated before promotion.
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Authorised Security Testing: Scope, Rules of Engagement and Safe Evidence
A practical guide to written authorisation, rules of engagement, stop conditions, safe evidence and reporting for security assessments and penetration tests.
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Cybersecurity Fundamentals for Small Business Owners
Cybersecurity fundamentals without the product jargon: understand assets, confidentiality, integrity and availability; assign risk ownership; choose safeguards; and test whether they work.
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Neural Networks Explained: Gradients, Optimisers and Evaluation
Understand what a neural network learns, how backpropagation differs from an optimiser, and which data, evaluation, reproducibility and governance checks matter before deployment.
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Supervised, Unsupervised and Other Machine-Learning Paradigms
Choose a machine-learning approach from the available feedback, decision and evaluation—not from a simplistic supervised-versus-unsupervised algorithm list.
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Web Accessibility with WCAG 2.2: A Practical Delivery Guide
Build accessibility into discovery, design, development and testing with a WCAG 2.2 AA-oriented workflow that combines automated checks with keyboard, screen-reader and human evaluation.
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Testing Web Applications: A Risk-Based Strategy That Scales
Design a maintainable web test suite around business risks, fast unit and component feedback, contract and integration evidence, and a focused set of browser journeys.
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Docker Compose in Production: A Defensible Single-Host Pattern
Move a Compose application from development to a controlled single-host deployment with immutable images, scoped networks, health checks, secrets, backups, observability and tested rollback.
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MySQL and WordPress Database Performance: Measure Before You Tune
Diagnose WordPress and MySQL database performance from real traces, query plans and application behaviour before changing indexes, autoloaded options, caches or server settings.
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Progressive Web Apps: Design the Experience Before the Install Prompt
Evaluate a progressive web app around real user tasks, network resilience, manifest quality, service-worker updates, storage and cross-browser capability rather than treating installation as the goal.