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Ethan Heilman

Personal blog · ethanheilman.com/x · on HN as EthanHeilmansecuritysystems

Ethan Heilman's personal blog at ethanheilman.com covers security and systems. Since 2023, 9 different Hacker News readers have linked it 23 times, most often “A Brief History of NSA Backdoors (2013)”. No feed was found, so read it on the site itself.

No feed foundVisit the blog
23mentions?
9HN people?
2023–2026first – last linked?
Links on Hacker News per year · peak 9 in 2025

Too few sampled comments (4) to say how often HN recommends it.?

Why HN links it

Commenters cite these posts as references: a brief list of NSA backdoors and a 2013 history of NSA backdoors, plus a 2014 piece asking whether IP address allocations are property. The comments only link them as sources.

Summarised by Claude from a sample of 4 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

The author on HN?

EthanHeilman · 6,075 karma · member since 2012

Ethan Heilman CTO and co-founder of bastionzero.com (now part of Cloudflare), author of OpenPubkey (https://eprint.iacr.org/2023/296) * https://www.ethanHeilman.com * https://github.com/ethanheilman * https://hexagon.space/@ethan_heilman

From their public HN profile, which links to this site.

Most-linked posts?

  1. A Brief History of NSA Backdoors (2013)
    5 people · 7 mentions · first linked 2024-02-04
  2. Replacing SGX with GitHub Actions: Or How to Turn GitHub Actions into a Trusted
    2 people · 3 mentions · first linked 2025-09-08
  3. Opkssh integrating single sign-on with SSH (2025)
    2 people · 2 mentions · first linked 2026-07-31
  4. God created the real numbers
    2 people · 2 mentions · first linked 2025-08-28

What Hacker News says?

  1. We shouldn't rule it out, but it seems unlikely to me. This is more reckless than any backdoor I can think of by a US agency . NSA backdoored Dual EC DRBG, which was extremely reckless, but this makes that look careful and that was the Zenith of NSA recklessness. The attackers here straight up just cowboy'd the joint. I can't think of any instance in which US intelligence used sock puppets on public forums and maili…

    Comment linking /x/12/index.html

    on “Backdoor in upstream xz/liblzma leading to SSH server compromise”
  2. Submitted God created the real numbers as a story · 136 points

    HN discussion
  3. For non-legacy allocations, point taken (but my original comment still stands if you replace "ownership" with "registration"). For legacy allocations, it's more complicated. See: Are IP Address Allocations Property? (2014) https://www.ethanheilman.com/x/19/index.html

    Comment linking /x/19/index.html

    on “Launching RDAP; sunsetting WHOIS”
  4. Submitted How many IP addresses can a DNS query return? (2015) as a story · 71 points

    HN discussion
  5. > I wrote blog entry on this subject with a very similar name [0] which covers the CryptoAG story in more detail. It doesn't have the 2020 news. [0]: A Brief History of NSA Backdoors (2013), https://www.ethanheilman.com/x/12/index.html Wow this is super interesting I noticed this paragraph in the text. > 2013, Enabling for Encryption Chips: In the NSA's budget request documents released by Edward Snowden, one of the…

    Comment linking /x/12/index.html

    on “A brief history of the U.S. trying to add backdoors into encrypted data (2016)”
  6. Submitted A Brief History of NSA Backdoors (2013) as a story · 45 points

    HN discussion
  7. I wrote blog entry on this subject with a very similar name [0] which covers the CryptoAG story in more detail. It doesn't have the 2020 news. [0]: A Brief History of NSA Backdoors (2013), https://www.ethanheilman.com/x/12/index.html

    Comment linking /x/12/index.html

    on “A brief history of the U.S. trying to add backdoors into encrypted data (2016)”
  8. Submitted God created the real numbers as a story · 31 points

    HN discussion
  9. Brief list of NSA backdoors: https://www.ethanheilman.com/x/12/index.html

    Comment linking /x/12/index.html

    on “XKeyscore”
  10. Submitted A brief history of NSA backdoors. (2013) as a story · 13 points

    HN discussion
  11. (2013) Also mirrored on his site: https://www.ethanheilman.com/x/12/index.html (Shared recently by them https://news.ycombinator.com/item?id=39247497 )

    Comment linking /x/12/index.html

    on “A brief history of NSA backdoors (2013)”
  12. Submitted Replacing SGX with GitHub Actions: Or How to Turn GitHub Actions into a Trusted as a story · 4 points

    HN discussion
  13. Submitted GitHub Actions is a trusted computing oracle as a story · 4 points

    HN discussion
  14. Submitted Missile vs. Laser: The Game of Terminal Maneuvers as a story · 4 points

    HN discussion
  15. Submitted Are IP Address Allocations Property? (2014) as a story · 3 points

    HN discussion
  16. Submitted Turning GitHub Actions into an oracle (2025) as a story · 2 points

    HN discussion
  17. Submitted A Brief Examination of Hacking Team's Crypter (2015) as a story · 2 points

    HN discussion
  18. Submitted The Terminal Escape Sequences Ocean Is Deep and Dark as a story · 2 points

    HN discussion
  19. Submitted Open-sourcing OpenPubkey SSH (OPKSSH): integrating single sign-on with SSH as a story · 1 points

    HN discussion
  20. Submitted Opkssh integrating single sign-on with SSH (2025) as a story · 1 points

    HN discussion
  21. Submitted The Game of Terminal Maneuvers as a story · 1 points

    HN discussion
  22. Submitted How many IP addresses can a DNS query return? (2015) as a story · 1 points

    HN discussion
  23. Submitted ASCII Art Timeline of the Circle-CI Hack as a story · 1 points

    HN discussion

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