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⚡ AI Lessons

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
1w ago
Why Cursor Keeps Writing Command Injection Into Your Code (CWE-78)
TL;DR AI editors love exec() with a template string, because that is what most tutorials...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
1w ago
Scan Any Public GitHub Repo for Security Issues in Seconds (No Account)
TL;DR You can now paste any public GitHub repo URL and get a security grade back in...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Why Cursor Keeps Writing SSRF Into Your URL Fetch Code
TL;DR Ask any AI editor for a "fetch this URL" feature and it hands the user's raw input...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Why Cursor Keeps Hashing Passwords With MD5 (And How to Fix It)
TL;DR AI editors still reach for md5/sha1 to hash passwords because that is what a decade...

Dev.to · Charles Kern
📣 Digital Marketing & Growth
⚡ AI Lesson
1mo ago
Ranked #1 on Google, Invisible in ChatGPT? Here's Why
A marketing director I spoke with last month spent eighteen months and roughly $60K building out her...

Dev.to · Charles Kern
📣 Digital Marketing & Growth
⚡ AI Lesson
1mo ago
Why Ranking #1 on Google Doesn't Mean AI Cites You
A marketing director I talked to recently had a problem she couldn't explain. Her company ranked on...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
2mo ago
Why Cursor Keeps Writing MD5 for Passwords (And How to Fix It)
TL;DR AI editors frequently output MD5 or SHA-1 for password hashing -- both broken for...

Dev.to · Charles Kern
⚡ AI Lesson
2mo ago
AI-Generated APIs Have an IDOR Problem: 3 Patterns Cursor Misses
TL;DR AI editors add authentication middleware but skip per-resource ownership checks by...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
2mo ago
Why Cursor Keeps Writing MD5 Password Hashes (CWE-328)
TL;DR AI editors default to MD5/SHA1 because training data is dominated by pre-2012...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
2mo ago
IDOR in Cursor-Generated Code: The Auth Bug Nobody Checks For
TL;DR AI-generated CRUD endpoints routinely skip ownership checks (CWE-639) Any...

Dev.to · Charles Kern
🤖 AI Agents & Automation
⚡ AI Lesson
2mo ago
IDOR in AI-Generated Code: What Cursor Won't Check for You
TL;DR Cursor generates authenticated API routes with no ownership verification by...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
IDOR in AI-Generated APIs: What Cursor Won't Check for You
TL;DR AI editors generate routes that fetch resources by ID with no ownership check --...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
Why Cursor Keeps Generating Wildcard CORS -- And How to Fix It
TL;DR AI editors almost always default to cors() with no config -- which sets...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
Why Cursor Keeps Hardcoding Your API Keys (And How to Stop It)
TL;DR AI assistants trained on public repos reproduce hardcoded secrets because that's...

Dev.to · Charles Kern
🔧 Backend Engineering
⚡ AI Lesson
3mo ago
Why Cursor Generates Wildcard CORS in Every Express App
TL;DR Cursor almost always outputs cors() or cors({ origin: '*' }) with no origin...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
Why Cursor Keeps Setting CORS to * (And How to Fix It)
TL;DR Wildcard CORS (Access-Control-Allow-Origin: *) shows up in the majority of...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
AI-Generated APIs Keep Shipping Wildcard CORS. Here's the Fix.
TL;DR Cursor, Claude Code, and Copilot consistently generate Access-Control-Allow-Origin:...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
The IDOR Bug Cursor Keeps Writing Into Your API Routes
TL;DR AI editors add authentication middleware but routinely skip ownership...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
IDOR in Cursor-Generated APIs: The Auth Check That Never Shows Up
TL;DR Cursor and Claude Code generate resource endpoints that authenticate but never...

Dev.to · Charles Kern
🔐 Cybersecurity
⚡ AI Lesson
3mo ago
3 Broken Auth Bugs Cursor Keeps Writing Into JWT Code
TL;DR Cursor generates jwt.decode instead of jwt.verify, which skips signature validation...
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