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Greg Molnar

Personal blog · greg.molnar.io/blogprogrammingsecurity

Greg Molnar's personal blog at greg.molnar.io covers programming and security. Since 2014, 14 different Hacker News readers have linked it 30 times, most often “A Single File Rails Application”. It is still writing: the last post was on 2026-10-30, and you can follow it by feed.

Visit the blog
30mentions?
14HN people?
2014–2026first – last linked?
Links on Hacker News per year · peak 9 in 2023

Too few sampled comments (2) to say how often HN recommends it.?

Why HN links it

Linked as the source for a 2021 post about a Rails console bypass that led to the 37signals hack. The comments only cite or link the post and do not assess the writing.

Summarised by Claude from a sample of 2 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

Blog and website of Greg Molnar, Ruby Developer, Rails Developer, IT Security Consultant, Penetration Tester, Ethical hacker. Opinions expressed are mine.

Most-linked posts?

  1. A Single File Rails Application
    5 people · 5 mentions · first linked 2022-08-09
  2. Rubygems CVE-2022-29176 explained
    2 people · 2 mentions · first linked 2022-05-06
  3. Rails Console1984 Bypass
    2 people · 2 mentions · first linked 2021-08-27

What Hacker News says?

  1. gregmolnar · 2024-11-17
    I have a 13" one for 2 years and a 16" for close to 6 months. I love them both and I will likely only upgrade these and never by a complete new laptop. The 13 is amazing for the go, lightweight and comfortable. The 16 is great for me for general use, because I don't work at a table, so the larger screen makes a big difference. I recommend the AMD one, that performs better for me(my 13 is Intel). I have 2 articles ab…

    Comment linking /blog/framework-16-first-impression/

    on “Ask HN: Would you recommend a framework laptop?”
  2. thunderbong · 2024-04-22

    Submitted The dangers of single line regular expressions as a story · 85 points

    HN discussion
  3. gregmolnar · 2015-12-04
    SEEKING WORK Remote only Location: UK Technologies: Ruby, Rails, Penetration testing, Devops Email: greg@molnar.io Website: https://greg.molnar.io Blog: http://rubytutorial.io GitHub: https://github.com/gregmolnar

    Comment linking /

    on “Ask HN: Freelancer? Seeking freelancer? (December 2015)”
  4. gregmolnar · 2015-10-28

    Submitted Prevent information leaking in Rails as a story · 27 points

    HN discussion
  5. Alifatisk · 2023-07-11
    Ruby weekly https://discu.eu/weekly/ruby greg.molnar https://greg.molnar.io/blog/ Lucian Ghinda (from ShortRuby) https://substack.com/profile/138511374-lucian-ghinda-from-sh...

    Comment linking /blog/

    on “Ask HN: What tech newsletters are you currently subscribing?”
  6. Alifatisk · 2023-10-13

    Submitted Rack Attack – Rails Tricks as a story · 7 points

    HN discussion
  7. runjake · 2025-10-31
    The post in question (2021): https://greg.molnar.io/blog/console1984-bypass/

    Comment linking /blog/console1984-bypass/

    on “I interviewed the Rails developer who "accidentally" hacked 37signals”
  8. gregmolnar · 2024-12-31

    Submitted What changed in Rails this year? as a story · 4 points

    HN discussion
  9. arkadiyt · 2022-05-09

    Submitted Rubygems CVE-2022-29176 explained as a story · 4 points

    HN discussion
  10. pentestercrab · 2024-05-27

    Submitted A Single File Ruby on Rails Application as a story · 3 points

    HN discussion
  11. gregmolnar · 2022-08-09

    Submitted A Single File Rails Application as a story · 3 points

    HN discussion
  12. gregmolnar · 2014-04-02

    Submitted The 4 days Guide to Rake as a story · 3 points

    HN discussion
  13. sathishmanohar · 2024-10-22

    Submitted A Single File Rails Application as a story · 2 points

    HN discussion
  14. thunderbong · 2024-03-24

    Submitted Brute-Forcing 2FA with Ruby as a story · 2 points

    HN discussion
  15. Alifatisk · 2023-05-11

    Submitted A Single File Rails Application as a story · 2 points

    HN discussion
  16. gregmolnar · 2022-05-06

    Submitted Rubygems CVE-2022-29176 explained as a story · 2 points

    HN discussion
  17. gregmolnar · 2021-08-27

    Submitted Rails Console1984 Bypass as a story · 2 points

    HN discussion
  18. PKop · 2026-09-21

    Submitted On the Recent EuRuKo as a story · 1 points

    HN discussion
  19. doppp · 2025-03-16

    Submitted Exploiting LLM Tools as a story · 1 points

    HN discussion
  20. unripe_syntax · 2024-10-02

    Submitted Rails World 2024 as a story · 1 points

    HN discussion
  21. thunderbong · 2024-04-16

    Submitted Active Record Transaction Callbacks as a story · 1 points

    HN discussion
  22. amalinovic · 2023-12-19

    Submitted Rails Attribute Changed Callback as a story · 1 points

    HN discussion
  23. bryanmikaelian · 2023-06-23

    Submitted Deploying a Rails App with MRSK as a story · 1 points

    HN discussion
  24. unripe_syntax · 2023-05-23

    Submitted Infer name with link_to – Rails Tricks Issue 8 as a story · 1 points

    HN discussion
  25. amalinovic · 2023-04-18

    Submitted Array Tricks – Rails Tricks Issue 3 as a story · 1 points

    HN discussion
  26. amalinovic · 2023-04-04

    Submitted Rails Tricks Issue 1 as a story · 1 points

    HN discussion
  27. mooreds · 2023-01-10

    Submitted Adding Tests to an Existing Project as a story · 1 points

    HN discussion
  28. vinnyglennon · 2022-08-16

    Submitted A Single File Rails Application as a story · 1 points

    HN discussion
  29. gregmolnar · 2022-05-09

    Submitted 6 Security Improvements in Rails 7 as a story · 1 points

    HN discussion

Search all of HN for greg.molnar.io

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