Max Levchin
max.levch.in · Personal blog · on HN since 2012
Max Levchin, PayPal co-founder and Affirm founder, writes about startups, building companies and stories from his career.
What HN saysHN links his Shamir Secret Sharing story about a 3am PayPal crisis, which commenters cite as a favorite encryption horror story.
21HN people shared it
5linked it in comments
16stories submitted
58story points
5 months agolast shared
2012people per year2026
Most-shared posts
- 1Max Levchin: To Build a Meritocracy6 people · 25 points · first shared 2024 · 2 comments on HN
- 2Shamir Secret Sharing – how PayPal nearly died5 people · 14 points · first shared 2023 · 3 comments on HN
- 3Shamir Secret Sharing4 people · 6 points · first shared 2023 · discussion on HN
- 4High Leverage Individuals2 people · 3 points · first shared 2012 · discussion on HN
- 5Max Levchin: Strengthen Your Startup Skeleton2 people · 1 points · first shared 2014 · discussion on HN
- 6Max Levchin's DLD13 Keynote1 people · 7 points · first shared 2013 · 2 comments on HN
- 7The Story behind Max Levchin's Affirm1 people · 2 points · first shared 2015 · discussion on HN
What HN people wrote when they linked it
tomasreimers · 2023-09-16
There was a post about shamir secret sharing recently by levchin (and chaos that it caused at paypal): https://max.levch.in/post/724289457144070144/shamir-secret-sharing-its…
This is 100% one of my favorite algorithms, but I have to say I've started to wonder if I just have an academic fascination with it and the practical use cases are more limited (limiting?) than I think
sayemm · 2014-03-05
I've been working on startups more or less for most of my 20s (both as a founder and an employee at a venture-backed startup), I've learned a great deal from it, lost a lot from it and endured a lot of hardship, but I think the journey also transformed me and cut me out of wood (http://max.levch.in/post/36289276742/strengthen-your-startup-skeleton)… So no regrets, I'm really excited about the future and I'm thinking long-term.
I disagree with this post though, if I had to start all over again out of college... my recommendation would be to start a profitable, bootstrapped business. Build that up to 7-figures and be financially independent. You'll earn your first stripes way earlier than most, at much lower risk, and once you attain that black belt, then you'll be ready to consider swinging for the fences with a startup. And people around you will want to bet on you too with your track record.
I'm 28yrs old now and that's my gameplan for the next few years. I'm tired of being poor.
Worth reading: http://www.gabrielweinberg.com/blog/2010/06/paths-to-5m-for-a-startup-…
cryptoz · 2026-05-26
See also a story about an implementation from Max Levchin: https://max.levch.in/post/724289457144070144/shamir-secret-sharing-its…
Piraty · 2026-05-26
which is in fact by Max Levchin: https://max.levch.in/post/724289457144070144/shamir-secret-sharing-its…
mentalpagefault · 2025-10-01
Thanks! If you'd like to read another encryption related horror story, this one served as a bit of stylistic inspiration: https://max.levch.in/post/724289457144070144/shamir-secret-sharing-its…