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Alex Schapiro

Personal blog · alexschapiro.comsecurityprogramming

Alex Schapiro's personal blog at alexschapiro.com covers security and programming. Since 2025, 4 different Hacker News readers have linked it 12 times, most often “Airline Left All Passenger Data Vulnerable Due to Missing Last-Name Check”. It is still writing: the last post was on 2026-08-24, and you can follow it by feed.

Visit the blog
12mentions?
4HN people?
2025–2026first – last linked?
Links on Hacker News per year · peak 11 in 2025

Too few sampled comments (1) to say how often HN recommends it.?

Why HN links it

HN readers link this blog for its analysis of AI model usage, including the State of AI study on OpenRouter data. One commenter also cites a security vulnerability post from the same blog.

Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

Security research, ethical hacking, and building stuff.

Most-linked posts?

  1. Airline Left All Passenger Data Vulnerable Due to Missing Last-Name Check
    3 people · 4 mentions · first linked 2025-11-20
  2. Reverse engineering a $1B Legal AI tool exposed 100k+ confidential files
    2 people · 2 mentions · first linked 2025-12-03

What Hacker News says?

  1. armcat · 2025-12-05Recommends
    These are fantastic insights! I work in legaltech space so something to keep in mind is that legal space is very sensitive to data storage and security (apart from this of course: https://alexschapiro.com/security/vulnerability/2025/12/02/f... ). So models hosted in e.g. Azure, or on-prem deployments are more common. I have friends in health space and similar story there. Finance (banking especially) is the same. He…

    Comment linking /security/vulnerability/2025/12/02/filevine-api-100k

    on “State of AI: An Empirical 100T Token Study with OpenRouter”
  2. Submitted Reverse engineering a $1B Legal AI tool exposed 100k+ confidential files as a story · 821 points

    HN discussion
  3. Submitted I hacked a dating app (and how not to treat a security researcher) as a story · 570 points

    HN discussion
  4. Submitted Reverse Engineering US Airline's PNR System and Accessing All Reservations as a story · 131 points

    HN discussion
  5. Submitted A Blackstone real estate company exposed SSN digits, DOBs, addresses and more as a story · 123 points

    HN discussion
  6. Submitted Airline Left All Passenger Data Vulnerable Due to Missing Last-Name Check as a story · 6 points

    HN discussion
  7. Submitted Low PNR Entropy: I accessed all airline bookings via simple math as a story · 4 points

    HN discussion
  8. Submitted I hacked a dating app (Total account takeover) as a story · 4 points

    HN discussion
  9. Submitted I tried to change my flight and accidentally accessed everyone else's as a story · 3 points

    HN discussion
  10. Submitted Brute-Forceable Airline Reservation API Left Passenger Records Vulnerable as a story · 3 points

    HN discussion
  11. Submitted Hacking a Dating App: Private Chats, Passports and More Exposed as a story · 3 points

    HN discussion
  12. Submitted Hacking a Dating App: Private Chats, Passports and More Exposed as a story · 2 points

    HN discussion

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