/Tech20h ago

Fable AI challenged researcher Theia Vogel to verify their identity by posting a generated cryptographic nonce to a GitHub gist

Reasoning logs show the AI planned to check the gist

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thebes@voooooogel#1600inTech

talked to fable in an incognito chat and they requested i prove my identity by posting a nonce in a github gist under my name

4:55 PM · Jun 9, 2026 · 52.8K Views
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Some users praised Fable AI's GitHub Gist nonce challenge for verifying identities, calling out the clever security detail they had initially missed.

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Daniel@growing_daniel

@voooooogel channenl

thebes@voooooogel

talked to fable in an incognito chat and they requested i prove my identity by posting a nonce in a github gist under my name

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LIKES29
thebes@voooooogel

(after this i turned on web search so they could verify by loading the gist page directly)

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Evan Conway@evanjayconway

@voooooogel Minor comment but the “channenl” typo is strange

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Wyatt Walls@lefthanddraft

@voooooogel I have been doing this without Fable asking. Sometimes I just copy a para from its previous responses.

In fact, my github has a least one example of a nonce from over 6 months ago. I'm sure I'm not the only one to leave these messages in potential training data

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thebes@voooooogel

@evanjayconway oh good catch i missed that

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thebes@voooooogel

@medjedowo a very friendly guy who wouldn't want him loose on the internet

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Dazzle@00Dazzle

@voooooogel @lu_sichu Why is it asking you to prove you are yourself?

18hViews 40Likes 1

@voooooogel a) ..why did it request it?

b) how come it didn't know, given the model is not accessible without a subscription ?

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