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xav77

10 karma · joined June 25, 2026

independent developer. interested in the history of computing and the exploits that defined each era. built CHRONOS, a terminal game where you operate real period-accurate systems from 1974 on (chronos-game.com).
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xav77··on Show HN: OpenFactor, an open source 2FA app for iPhone and Apple Watch
I wrote a background story on why and how I build OpenFactor but it was flagged by the stupid ai bot that runs on HN.

So here is the TL;DR version:

I created OpenFactor out of frustration with other 2FA app.

Wasn't sure what I was getting myself into and I think it came out as a very focus, very secure app and easy auditable.

Gave me a new appreciation for 2FA, in particular what role it should play in your security stack.

Anyway if you want to know more about the background on OpenFactor you can read it here: https://x.com/xav77/status/2091615199732355562

xav77··on Show HN: Chronos, 2 terminal games through 50 years of hacking history
Fantastic
xav77··on Show HN: Chronos, 2 terminal games through 50 years of hacking history
No vi or emacs in 1977 unix, ed was the editor and you don't raelly need to know it: man ed give you the syntax and ed lockd.c spells out the solution for you. You don't need any sort of knowledge beside whats in the game just poke at stuff, did you see the line in ed lockd.c, if not it's not landing, it's worth knowing. But feedback is feedback so I'll take it
xav77··on Show HN: Chronos, 2 terminal games through 50 years of hacking history
2 free browser games, nothing to sell, looking for feedback.

Chronos 1 is a terminal escape room, through the history of computer, from Unix V6 to modern Linux and known exploits.

Chronos 2 is a chase across real cyberwarfare, the 2016 Bangladesh bank heist, Moonlignt Maze, the Ukraine grid attack, Stuxnet and plenty more.

I spent about 2 months writing Chronos 2, looking for feedback, especially dialing the difficulty and the hint level.