bitcoin

[continuation of the same tweet as previous screenshot]
Researchers have now found 1,367 BTC, nearly $89 million, taken from 4,585 addresses.

The AI part happened AFTER all this. A Reddit user reportedly pointed Claude Code at the public firmware and asked only to "check for vulnerabilities." Within eight minutes, it traced the broken random number path and brought up the same hackable flaw.

There is no proof the original attacker used Claude or ANY LLM. now this still demonstrates Claude is still insane at finding vulnerabilities humans missed in public code for five years and can now be uncovered by one person with one broad prompt and a coding agent in minutes.

[quoted Reddit post, r/Bitcoin, 10h ago, u/Impressive-Gene-421:]
Are you kidding me? Claude Code found the catastrophe after being asked only to ""check for vulnerabilities and thinking for 8 minutes

1. ngu.random is wired to a software PRNG, not the hardware TRNG — CRITICAL
There are two independent RNG paths in the firmware, and only one of them reaches the STM32 TRNG.
Path A (correct). ckcc.rng_bytes() → stm32/COLDCARD_MK4/rng.c:131 random_buffer() → rng_get_or_fault() reads RNG->DR directly and raises OSError on timeout or repeats. This is what backups.py:337 uses for the backup-file password.
Path B (broken). ngu.random.* → external/libngu/ngu/random.c:73 CHIP_TRNG_32(), defined at line 24-26 as extern uint32_t rng_get(void).

It is unbelievable that some kid with an LLM just stole $100m+ because no one bothered to check the source code.
Also on GLM 5.2 (trained 16th June, no internet access).

2:16 PM · Aug 2, 2026 · 28.7K Views

bitcoincybersecurityclaude codetwitterredditcryptocurrency

Chris ✔️ @ChrisGPT
Here's what actually happened with bitcoin and Claude because people are getting the story mixed up.

Coldcard hardware wallets were supposed to create each Bitcoin seed using real physical randomness from a chip.

But a firmware bug checked whether the hardware random number setting existed in the first place NOT whether it was actually enabled. It existed but was set to 0, so the wallet fell back to a randomized predictable software generator.

That reduced some wallets from roughly 2^128 possible seeds to around 2^40. The attacker could generate candidate seeds offline, derive their Bitcoin addresses and use the public blockchain like an answer key to see which wallets had funds.

Once one matched, they had a private key they could drain it without touching the device, and steal the seed phrase or "crack Bitcoin."

Researchers have now found 1,367 BTC, nearly $89 million, taken from 4,585 addresses.

The AI part happened AFTER all this. A Reddit user reportedly pointed Claude Code at the public firmware and asked only to "check for vulnerabilities." Within eight minutes, it traced the broken random number path and brought up the same hackable flaw. [cut off]

bitcoincybersecurityclaude codetwittercryptocurrency

Tenobrus @tenobrus

2026-08-02 — quoting @BitcoinMagazine — saved image

Tenobrus @tenobrus · 8h
its unfortunately looking like this may be beginning. one of the most "hardened" hardware bitcoin wallets was exploited, nearly $100 mil stolen from individual users. r/bitcoin in shambles.

attack surfaces are huge, and u don't need to break core protocols to steal coins

[quoted tweet]
Bitcoin Magazine @BitcoinM... · 21h
JUST IN: A third Coldcard hack has been reported with another 207.7294 BTC stolen.

A total of 1,367.05 BTC has been stolen from 4,585 addresses so far, according to Galaxy Research.

Users are urged to review the company's official security guidance as soon as possible‼️

[embedded Sankey-diagram chart: "Bitcoin Seed-Entropy Sweep: 4,585 Addresses Drained Across Three Waves", Source: Galaxy Research, Bitcoin network data. Columns: Victim Addresses (4,585 addresses) → Collectors and Parks (299 addresses) → Current Location, broken into Wave 1 (1,195 addresses), Wave 2 (1,478 addresses), Wave 3 (1,912 addresses), with flows in BTC amounts labeled at small scale (~594.48 BTC, 398.49 BTC, 88.85 BTC, 45.91 BTC, 30.18 BTC, 207.73 BTC etc.), footnote: 'Data as of Aug 1, 2026. Three waves...4,585 addresses, 1,367.05 BTC, ~$85.9M still held, 100% still unspent']
Galaxy Research
208 replies, 579 retweets, 1.9K likes, 363K views

[quoted tweet]
Tenobrus @tenobrus · Apr 7
epistemic status: loosely held speculation

this is probably a pretty bad time to be holding very much money in crypto wallets and especially smart contracts. ...

cryptocurrencycoldcard hackbitcoinsecuritytwitter