The TNSystem journal

Good to Know

Understanding IT. Making sense of AI development.

Latest articles

26 articles

Accessible software illustration featuring keyboard operation, readable text and understandable forms.

Software & architecture10 Oct 20269 min read

Accessible software: Good usability starts before design

Why clear forms, keyboard operation and accessible applications should be planned from the outset.

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Symbolic illustration of possible powerline interference with a VDSL router, not an installation diagram.

IT in practice10 Oct 202610 min read

FRITZ!Box and VDSL: When powerline disrupts the internet connection

Powerline and VDSL: investigate FRITZ!Box DSL interruptions, check events, compare direct LAN access and consider safe alternatives.

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Illustration of bots and AI showing a security summary with 32,867 failed logons, anonymised source labels and a symbolic world map.

AI9 Oct 202611 min read

Bots and AI in cyber attacks: What 32,867 failed logons tell us

32,867 failed network logons: what security logs can tell us about bots, why AI involvement is unproven and which protective measures matter.

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Illustration of the planned transition from Custom GPTs to plugins, showing capabilities, new workflows and questions for users.

AI9 Oct 202612 min read

OpenAI is retiring Custom GPTs: What is changing and why users object

OpenAI plans to retire Custom GPTs: dates, migration to plugins, user reactions and practical checks before switching.

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Phishing awareness illustration showing a laptop with a suspicious message, a fishing hook and a protective shield.

IT in practice9 Oct 202612 min read

Recognising phishing: How to protect ourselves from fraudulent messages

Recognise phishing and respond effectively: emails, texts, QR codes, passkeys and practical steps after a click, stolen credentials or a fraudulent payment.

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Network technology illustration with an Ethernet switch, fibre and wireless networking, a laptop and a connected digital globe.

IT in practice9 Oct 202613 min read

Future network technology: Speed alone is not enough

Plan future-ready networks: Wi-Fi 7 and 8, fibre, 5G and 6G, edge computing, IPv6, Zero Trust and AI-assisted network management explained clearly.

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Safer browsing illustration with a laptop, an encrypted connection and a glowing protective shield.

IT in practice9 Oct 202613 min read

Safer browsing: What really matters when visiting websites

Browse more safely: browser updates, HTTPS, passkeys, downloads, ClickFix, incognito, VPNs and public Wi-Fi. Practical advice for protecting accounts and data.

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Staff training illustration with a trainer, a team and a presentation on digital skills, security and efficient tools.

IT in practice9 Oct 202612 min read

Well-trained employees work more efficiently and make fewer mistakes

Plan useful staff training: digital skills, IT security, AI tools, practical exercises and measurable outcomes rather than attendance alone.

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AI-assisted software development illustration with a coding assistant and an architecture diagram.

AI9 Oct 202610 min read

AI writes the code — who ensures good software architecture?

AI in software development: architecture, modular applications, permissions, testing, code review and maintainability explained clearly.

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Secure software architecture illustration showing components, vulnerabilities, updates and support.

IT in practice9 Oct 202610 min read

Secure software starts with architecture

Understand the Cyber Resilience Act: 2026 reporting duties, 2027 requirements, SBOMs, support periods, security updates and software architecture.

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An AI chip between opportunities shown by books, a light bulb and a molecular model, and risks shown by a damaged padlock, question mark and power plug.

AI8 Oct 202610 min read

Artificial intelligence: the case for — and the case against

Five opportunities and five risks of AI: a personal assessment of productivity, learning, research, privacy and energy, grounded in published studies.

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Documents, a shield with a padlock and an AI chip beside a server listing well-known AI providers; illustration about AI and privacy.

AI8 Oct 202612 min read

AI and privacy: Who do we trust with our data?

AI privacy compared: ChatGPT, Claude, Gemini, Copilot, Mistral, Meta AI and DeepSeek. Training permissions, retention periods and practical control over your data.

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