Hacker News: joohwan

New comment by joohwan in "VS Code inserting 'Co-Authored-by Copilot' into commits regardless of usage"

joohwan — Sun, 03 May 2026 00:36:55 +0000

> If you fell for this once again, there's nobody else to blame but yourself.

We don’t need snarky comments like this, especially when the technology in question is so pervasive and takes a lot of cognitive effort to avoid. The blame lies solely with Microsoft.

New comment by joohwan in "Show HN: HoundDog.ai – Ultra-Fast Code Scanner for Data Privacy"

joohwan — Mon, 02 Feb 2026 20:17:31 +0000

LLMs can find issues that traditional SAST misses, but today they are slow, expensive, and nondeterministic. SAST is fast and cheap, but requires heavy manual rule maintenance. Our approach combines the strengths of both. The scanning engine is fully rule based and deterministic, with a rule language expressive enough to model code at compiler level accuracy. AI is used only to generate broad rule coverage across thousands of patterns, without sacrificing scan performance or reliability.

Show HN: HoundDog.ai – Ultra-Fast Code Scanner for Data Privacy

joohwan — Mon, 02 Feb 2026 16:37:00 +0000

Hi HN,

I'm one of the creators of HoundDog.ai (https://github.com/hounddogai/hounddog). We currently handle privacy scanning for Replit's 45M+ creators.

We built HoundDog because privacy compliance is usually a choice between manual spreadsheets or reactive runtime scanning. While runtime tools are useful for monitoring, they only catch leaks after the code is live and the data has already moved. They can also miss code paths that aren't actively triggered in production.

HoundDog traces sensitive data in code during development and helps catch risky flows (e.g., PII leaking into logs or unapproved third-party SDKs) before the code is shipped.

The core scanner is a standalone Rust binary. It doesn't use LLMs so it's local, deterministic, cheap, and fast. It can scan 1M+ lines of code in seconds on a standard laptop, and supports 80+ sensitive data types (PII, PHI, CHD) and hundreds of data sinks (logs, SDKs, APIs, ORMs etc.) out of the box.

We use AI internally to expand and scale our rules, identifying new data sources and sinks, but the execution is pure static analysis.

The scanner is free to use (no signups) so please try it out and send us feedback. I'll be around to answer any questions!

Comments URL: https://news.ycombinator.com/item?id=46857993

Points: 16

# Comments: 6

New comment by joohwan in "Is Clear Air Turbulence becoming more common?"

joohwan — Fri, 28 Jun 2024 20:51:53 +0000

Why is this comment being downvoted? Is it not true?

New comment by joohwan in "Show HN: Trophi.com – A forum the represents both sides of an argument"

joohwan — Mon, 25 Jan 2021 22:47:25 +0000

I personally find the font very hard on the eyes.

New comment by joohwan in "Show HN: Colorpedia – command-line tool for looking up colors"

joohwan — Mon, 25 Jan 2021 08:58:11 +0000

I've been working on a 2D game which involves pixel art. I wanted a way to quickly look up a color by hex code or RGB values on the terminal, but could not find a tool for it. So I created Colorpedia. It displays colors, shades and palettes along with details on multiple models (HSV, HSL, CMYK etc). It also outputs JSON for programmatic access.

Show HN: Colorpedia – command-line tool for looking up colors

joohwan — Sat, 23 Jan 2021 19:17:52 +0000

Article URL: https://github.com/joowani/colorpedia

Comments URL: https://news.ycombinator.com/item?id=25885214

Points: 11

# Comments: 2

Studying binary trees for assignment, exam or interview? Try binarytree (Python)

joohwan — Thu, 01 Feb 2018 01:56:47 +0000

Article URL: https://github.com/joowani/binarytree

Comments URL: https://news.ycombinator.com/item?id=16279191

Points: 1

# Comments: 0

Show HN: Directory Tags for Lazy Programmers

joohwan — Sat, 10 Dec 2016 06:31:46 +0000

Article URL: https://github.com/joowani/dtags

Comments URL: https://news.ycombinator.com/item?id=13144391

Points: 3

# Comments: 1

Show HN: Directory tags for lazy programmers

joohwan — Mon, 14 Nov 2016 02:46:51 +0000

Article URL: https://github.com/joowani/dtags

Comments URL: https://news.ycombinator.com/item?id=12947171

Points: 4

# Comments: 0

Show HN: Directory tags for lazy programmers

joohwan — Tue, 01 Nov 2016 23:58:42 +0000

Article URL: https://github.com/joowani/dtags

Comments URL: https://news.ycombinator.com/item?id=12851231

Points: 6

# Comments: 0

New comment by joohwan in "Show HN: KQ – Simple Job Queue for Python Using Kafka"

joohwan — Tue, 01 Nov 2016 03:47:05 +0000

Fixed!

New comment by joohwan in "Show HN: KQ – Simple Job Queue for Python Using Kafka"

joohwan — Tue, 01 Nov 2016 03:46:14 +0000

Very true. I indeed found the lack of visibility into per-message information very painful when I was building this. One way I tried to alleviate the issue was providing a consumer "callback" to make it easier for users to plug their own code in to handle job failures (like your example of using SQS).

I've also thought about reserving a topic + consumer group specifically for failed jobs and bake the retry logic into KQ itself. But that's an area I must explore more.

I'm not sure if I understand what you are saying about batching consumers. What do you mean by batching in this context? Thanks for your input.