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Practical insights on AI and security.

No hype. No fluff. Just useful things about AI governance, GDPR, and working safely with AI in your business.

AI Agents21 May 2026· 8 min read· Custos AI

Enterprise AI Agents: What They Actually Do

Enterprise AI agents sound autonomous, but most teams need something simpler and safer. Here is what an agent really does, and how to run one without an IT team.

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AI Tools9 May 2026· 18 min read· Custos AI

Best AI for Small Business in Europe (2026) — A Practical Guide

There is no single best AI for small business in 2026 — but there are clear winners per task. Compare GPT-5.5, Claude Opus 4.7, Gemini 3.1 Pro and Mistral Large 2, with sector-specific advice and a GDPR-friendly multi-model setup that costs 60–80% less.

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AI Governance9 May 2026· 14 min read· Custos AI

The Ultimate AI Governance Framework for Business Teams 2026

A practical 7-pillar AI governance framework synthesising NIST AI RMF, ISO 42001 and the EU AI Act — implementable in one week, with copy-paste policy a 20-person team can adapt in 30 minutes.

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AI cost management7 May 2026· 7 min read· Custos AI

GPT-5.5 pricing for European businesses: when is the premium worth it?

GPT-5.5 launched at 2× the price of GPT-5.4 on 23 April 2026. For complex reasoning it is genuinely worth the upgrade. For routine drafting, the cheaper tier delivers the same result. Here is how to decide.

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AI Governance24 April 2026· 8 min read· Custos AI

AI Governance Is Not a Department. It Is an Architecture.

A healthcare company wrote a 40-page AI policy. The DPO audit took ten minutes to prove it didn't work. This is why SME AI governance fails — and the three-layer architectural model that replaces it.

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AI Governance14 April 2026· 6 min read· Custos AI

Shadow AI: The Invisible GDPR Fine Hitting Small Businesses

A Utrecht law firm thought ChatGPT Plus was compliant. A client SAR proved otherwise. Here is why shadow AI becomes an invisible fine — and how the Custos 3V Rule closes the gap.

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Data Privacy14 April 2026· 7 min read· Custos AI

Zero Data Retention: The Default Nobody Ticked for AI

A Rotterdam HR firm paid €25 a user for 'business AI' — and lost its ISO 27001 certification anyway. This is the setting that matters, the gap in consumer AI, and the Custos BYOK-ZDR Stack that closes it.

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