Vibe Code. Ship Safely.

Practical guides on AI-assisted development, production hardening, DevOps, and the future of software engineering — written by the team at Diffian.

AI

GPT-5.5 Just Dropped. Is It the New King of Coding AI?

OpenAI's first fully retrained base model since GPT-4.5 scores 82.7% on Terminal-Bench 2.0 and uses 72% fewer tokens. But Claude Opus 4.7 still leads on SWE-bench. Here's what the benchmarks actually mean for developers.

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Mark Hayward
27 April 2026 · 8 min read
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Security

Authentication for Vibe-Coded Apps: Why AI Gets Auth Wrong

42% of AI-generated authentication code uses hardcoded secrets. JWT tokens with predictable keys, sessions that never expire, broken OAuth flows — here's how to find and fix the auth vulnerabilities in your vibe-coded app.

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Mark Hayward
21 April 2026 · 10 min read
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Security

Why Your Vibe-Coded App's Database Is a Ticking Time Bomb

AI-generated database code fails security checks 20% of the time. SQL injection, leaked credentials, and missing access controls are the norm. Here's how to find and fix the holes before attackers do.

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Mark Hayward
14 April 2026 · 9 min read
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AI

Mythos Scores 93.9% on Coding Benchmarks — But Your Vibe-Coded App Still Needs Engineers

Anthropic's Claude Mythos is the most capable coding AI ever built. It's restricted to 40 companies because of its security capabilities. Here's what that means for founders building production software with AI tools.

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Mark Jones
9 April 2026 · 7 min read
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Security

Vibe Coding Security in 2026: The Risks Are Real and Growing

CVEs from AI-generated code jumped from 6 in January to 35 in March. Here are the five security risks every vibe-coded app faces — exposed secrets, injection flaws, broken auth, misconfigured infrastructure, and data leaks — and how to fix them.

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Mark Jones
7 April 2026 · 10 min read
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DevOps

Your Vibe-Coded App Is Live — Now What? A Founder's Guide to Monitoring

Most vibe-coded apps ship with zero monitoring. Here's what breaks when you can't see what's happening in production, and how to set up error tracking, uptime alerts, and observability in an afternoon.

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Mark Jones
4 April 2026 · 9 min read
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DevOps

CI/CD for Non-Engineers: Why Your Deploy Process Matters More Than Your Code

Bad code with a good deployment pipeline is safer than good code deployed manually. Here's what CI/CD actually means, why manual deploys are a liability, and what a production-grade pipeline looks like — in plain English.

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Mark Jones
4 April 2026 · 8 min read
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DevOps

From Prototype to Production: A Step-by-Step Guide

Getting from "it works on my machine" to an enterprise-grade production system is a journey with six distinct stages. Here's what actually happens at each step — and what breaks if you skip ahead.

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Mark Jones
10 March 2026 · 10 min read
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Tools

Vibe Coding Platforms Compared: Cursor vs Bolt vs Lovable vs Replit vs Claude Code

Each platform takes a fundamentally different approach to AI-assisted development. We've built real projects with all of them so you can choose the right tool for your situation.

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Mark Jones
20 Feb 2026 · 12 min read
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Security

The Hidden Costs of Shipping Vibe-Coded Apps Without Engineering Support

AI tools get you 80% of the way there fast. But the remaining 20% — security hardening, compliance, monitoring, CI/CD — is where the real risk lives. Here's what you're missing.

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Mark Jones
5 Feb 2026 · 8 min read
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Strategy

Why Vibe Coding Is the Future of Software Development

For the first time in history, the people who understand problems best can build solutions themselves. Vibe coding isn't a shortcut — it's a fundamental shift in who gets to create software.

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Mark Jones
15 Jan 2026 · 7 min read
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Company

Why Cardiff? Building a World-Class DevOps Team in Wales

You don't need to be in London to build world-class software. Cardiff's growing tech scene, strong universities, and cost advantages make it an exceptional base for a DevOps team.

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Mark Jones
20 Dec 2025 · 6 min read
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