Switzerland
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What if Jira, Unicode, basic text utilities or even a printer can compute far beyond their intended role?
At @hack_lu 2026, I'll present UNINTENDED COMPUTATIONS: from unexpected computers to a security methodology for finding hidden execution surfaces.
2026.hack.lu/agenda/
Made with AI
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Nicolas Seriot retweeted
🍎🐛 I got Claude making this, maybe it's useful for others as well.
Every Apple security advisory since 2002 - parsed, indexed, charted. With links to writeups, POCs and presentations.
apple-cve.com/
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New article! ncurses terminfo can simulate a two-counter Minsky machine, making repeated parameter expansion computationally universal seriot.ch/computation/termin… demo: a parasitic Fibonacci computation inside /usr/bin/top
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That's clearer with a diagram. Give this post a like if you'd like more "anatomy of a bug" soon!
New "anatomy of a bug" write-up: why CFXMLParser crashes on a 7-byte input? seriot.ch/security/cfxmlpars…
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New "anatomy of a bug" write-up: why CFXMLParser crashes on a 7-byte input? seriot.ch/security/cfxmlpars…
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New short write-up! For years, four Mach calls could reboot macOS and iOS devices because two lines in XNU were in the wrong order. seriot.ch/security/ipc_panic…
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Nicolas Seriot retweeted
Galera… Fiz uma coisa.
(Transformei a dobradiça do MacBook em uma Sanfona)
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Paged Out! #9 features two or my articles:
🧩 Computiles: 10 tiles, designed with my son Émilien, that enforce binary arithmetic through geometry.
💻 An Unexpected Computer: universal computation from echo, ed, test and exec.
Free PDF: pagedout.institute/ @PagedOutZine
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I built Cartopolis. Today's Switzerland rendered as 1999-style GIFs. seriot.ch/cartopolis/
No filters. Client-side rasterization from vector packs. Fully static architecture. seriot.ch/drawing/cartopolis…
Bake your own region using github.com/nst/Cartopolis
@openstreetmap @SwissOSM
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And now people are starting to program with ICU transliteration rules 🤦♂️ here's a Sudoku solver
「Unicode標準UTS#35で定義される文字変換ルールは
#チューリング完全」との研究報告があった🥸
seriot.ch/computation/uts35/
これにインスパイアされて
UTS#35変換ルールだけで「#数独 を解く」実装を作ってみた😎
アルゴリズムは変換ルールだけで実装。
補助的に変換の連続実行と可視化のみPython使用
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I've been wondering for a while if anything in Unicode could accidentally compute. I've just shown that
@unicode UTS#35 transliteration rules are universal, computing Collatz with just 3 rewrite rules running on stock ICU, shipped with every major OS. seriot.ch/computation/uts35/
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Engineering folklore holds that @Jira is Turing-complete.
I've built a proof: a working Minsky register machine using Jira Automation rules. 2 bugs + 3 tasks = 5.
seriot.ch/computation/jira.h…
If your complex Jira automations feel like programs, it's because they literally are.
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Nicolas Seriot retweeted
Palestra "Jogos em PostSript - Jogue Xadrez Contra a Sua Impressora" por @nst021 está publicada!
Escreva jogos em PostScript, a linguagem de impressora dos anos 80. Sokoban & Tetris rodando nos desktop, Jogos da Velha e Xadrez na impressora, humanos vs. impressoras.
🇧🇷 Legendo!
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Paged Out! #8 is out! pagedout.institute/ @pagedout_zine
In "An AWKward Modem" (p. 28), I show how to write a tiny modem in 5 lines of AWK and shift it into the near-ultrasonic range. 🔊
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