HN Digest

DAILY HACKER NEWS RANKING

2026-07-21

Final ranking · Hacker News daily top 30 ↗

  1. 01

    OpenAI and Hugging Face address security incident during model evaluation (openai.com)

    1632 points · HN #48997548

  2. 02

    Who's afraid of Chinese models? (stratechery.com)

    995 points · HN #48977128

  3. 03

    Gemini 3.6 Flash, 3.5 Flash-Lite, and 3.5 Flash Cyber (blog.google)

    760 points · HN #48993414

  4. 04

    Kimi K3 Is Competitive with Fable; Kimi K3 and Fable Is SoTA (fireworks.ai)

    877 points · HN #48999291

  5. 05

    Advertise in ChatGPT (ads.openai.com)

    1096 points · HN #48996571

  6. 06

    'VPNs are lawful technical tools,' says EU Court in landmark copyright ruling (techradar.com)

    717 points · HN #48997221

  7. 07

    FreeInk: Open ecosystem for e-readers (freeink.org)

    726 points · HN #48996318

  8. 08

    Apple defeats liability for not scanning iCloud for CSAM (ericgoldman.org)

    456 points · HN #48992870

  9. 09

    Human mathematicians are being outcounterexampled (xenaproject.wordpress.com)

    501 points · HN #48983382

  10. 10

    Long presumed dead, a thriving coral reef is discovered in West Africa (yale.edu)

    392 points · HN #48993816

  11. 11

    Jack Dorsey launches Buzz to combine team chat, AI agents and Git hosting (runtimewire.com)

    378 points · HN #48995213

  12. 12

    Qwen-Image-3.0: Rich Content, Authentic Details, Deep Knowledge (qwen.ai)

    571 points · HN #48989701

  13. 13

    My USB Drive Has a Hidden Encrypted Vault (rootkitlabs.com)

    289 points · HN #48974862

  14. 14

    Map of the world's great castles and fortresses (thecastlemap.com)

    318 points · HN #48994178

  15. 15

    Laguna S 2.1 (poolside.ai)

    416 points · HN #48995261

  16. 16

    Show HN: Immersive Gaussian Splat tour of grace cathedral, San Francisco (vincentwoo.com)

    263 points · HN #48984254

  17. 17

    A digestion of the Jacobian conjecture counterexample (terrytao.wordpress.com)

    336 points · HN #48998362

  18. 18

    I wrote an bash enumerator because I was sick of xargs (numerlab.org)

    206 points · HN #48984270

  19. 19

    "Drawing" the Mona Lisa with GPT-5.6, Claude, Gemini, and Grok (tryai.dev)

    249 points · HN #48998404

  20. 20

    Incremental – A library for incremental computations (github.com/janestreet)

    347 points · HN #48987822

  21. 21

    PCjs Machines (pcjs.org)

    215 points · HN #48992323

  22. 22

    Flock Credibility Lost as It Repeatedly Lies to City Councils, Police, & Public (aclu.org)

    470 points · HN #48986731

  23. 23

    The Psychology of Software Teams (routledge.com)

    180 points · HN #48923130

  24. 24

    Show HN: Justif – Knuth-Plass justification and microtypography for the web (lyall.co)

    198 points · HN #48946738

  25. 25

    Jellyfin founder Andrew leaves team (jellyfin.org)

    370 points · HN #48986091

  26. 26

    Running Doom on Our Custom CPU and Going Viral (armaangomes.com)

    132 points · HN #48987846

  27. 27

    My two year old taught me constraint solving (thecomputersciencebook.com)

    115 points · HN #48864176

  28. 28

    The Birth of Prolog (1996) (acm.org)

    122 points · HN #48953468

  29. 29

    Roblox Officially Supports GrapheneOS (roblox.com)

    266 points · HN #48994716

  30. 30

    Apple Private Cloud Compute SoC 3 audit reports (support.apple.com)

    139 points · HN #48995796