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⚡ AI Lessons
Dev.to · Andrew Rozumny
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
CORS Errors Explained: A Practical Debug Guide for 2026
Access to fetch at 'https://api.example.com' from origin 'http://localhost:3000' has been blocked by...
Dev.to · Andrew Rozumny
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
You’re probably leaking sensitive data every time you use online dev tools
Most developers don’t think twice before pasting data into online tools. JSON formatters, JWT...
Dev.to · Andrew Rozumny
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
Stop Pasting Sensitive Data Into Random Online Tools
If you've ever pasted sensitive data into an online tool… pasted a JWT into a random...
Dev.to · Andrew Rozumny
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
Every Stripe test card you'll ever need (plus fake checkout data for Shopify, WooCommerce & Magento)
If you're building or testing an e-commerce checkout, you've been there: opening the Stripe docs,...
Dev.to · Andrew Rozumny
⚡ AI Lesson
3mo ago
I added 40 tools to my dev toolkit site in one week — here's what I learned
A week ago ToolDock had 20 tools. Today it has 60+. Here's what I shipped, what broke, and what...
Dev.to · Andrew Rozumny
⚡ AI Lesson
3mo ago
Your framework choice is now your biggest AI cost lever
The Wasp team published something worth reading today — they gave Claude Code the exact same feature...
Dev.to · Andrew Rozumny
🔐 Cybersecurity
⚡ AI Lesson
4mo ago
I got tired of pasting sensitive strings into random websites, so I built a browser-based hash generator
I work on a few different projects and I hash things constantly — checking file integrity, debugging...
Dev.to · Andrew Rozumny
📣 Digital Marketing & Growth
⚡ AI Lesson
4mo ago
Why I built my own browser-based dev tools (and why privacy matters more than I thought)
I've been a developer for years. Like most people, I had a handful of online tools I used daily — JWT...
DeepCamp AI