Disclosure: I work at Knowverse, the company behind TechDD. This post is about our own event.

I'm not a developer. I sit next to the people who build our code-checking tools, and over the past few months I've watched them run the same three checks on almost every codebase that comes through the door. Small startups, solo builders, teams getting ready for investor due diligence — the same three problems keep showing up.

This month we have a reason to give that check away. Knowverse was selected for KAIST OverEdge Top 25 , and to say thank you, our Security Triple Check is free from Nov 4 to Dec 3, 2026 (KST) . It's normally $119.

But first, here's what the three checks are, and how you can run a basic version of each yourself today, for free.

1. Leaked secrets

API keys, database passwords and tokens that ended up in the code — or in the git history, even after someone deleted them from the current files.…