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“The Claude Code Source Leak” by Error
(mods: I assume this is blowing up twitter and so discussing it here
won't do additional damage -- and there are already a thousand github
forks -- but I am not actually on twitter, which is why I’m opening
discussion here. It's possible I'm missing something. Feel free to nuke
this if so.)
For those that hadn't heard yet, last night Anthropic appears to have
accidentally published a Claude Code update with extractable source code
in it. This seems important, but I'm not sure how much so, and I didn't
see an existing discussion here.
My understanding -- and hopefully someone will correct me if I'm wrong
-- is that the actually dangerous part of Claude is the weights, and
those were not leaked. So the leak may be embarrassing, it may cost
Anthropic some competitive advantage, but it's not dangerous.
It's also my understanding that Anthropic has historically been
relatively leak-free, until a certain memo leaked a few weeks ago during
the DoW incident. Supposedly twice is still coincidence, not enemy
action, but it does feel like a questionable coincidence and I wonder if
the same person is responsible for both leaks. I don’t know [...]
---
First published:
March 31st, 2026
Source:
https://www.lesswrong.com/posts/YcACRSjpGrqJ4hAyD/the-claude-code-source-leak-1
---
Narrated by TYPE III AUDIO.
View all episodes
By LessWrong(mods: I assume this is blowing up twitter and so discussing it here
won't do additional damage -- and there are already a thousand github
forks -- but I am not actually on twitter, which is why I’m opening
discussion here. It's possible I'm missing something. Feel free to nuke
this if so.)
For those that hadn't heard yet, last night Anthropic appears to have
accidentally published a Claude Code update with extractable source code
in it. This seems important, but I'm not sure how much so, and I didn't
see an existing discussion here.
My understanding -- and hopefully someone will correct me if I'm wrong
-- is that the actually dangerous part of Claude is the weights, and
those were not leaked. So the leak may be embarrassing, it may cost
Anthropic some competitive advantage, but it's not dangerous.
It's also my understanding that Anthropic has historically been
relatively leak-free, until a certain memo leaked a few weeks ago during
the DoW incident. Supposedly twice is still coincidence, not enemy
action, but it does feel like a questionable coincidence and I wonder if
the same person is responsible for both leaks. I don’t know [...]
---
First published:
March 31st, 2026
Source:
https://www.lesswrong.com/posts/YcACRSjpGrqJ4hAyD/the-claude-code-source-leak-1
---
Narrated by TYPE III AUDIO.
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