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Newsletters: add 416 (2026-07-31) - #2831

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bitschmidty:2026-07-31-newsletter
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Newsletters: add 416 (2026-07-31)#2831
bitschmidty wants to merge 9 commits into
bitcoinops:masterfrom
bitschmidty:2026-07-31-newsletter

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@bitschmidty

@bitschmidty bitschmidty commented Jul 25, 2026

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@bitschmidty bitschmidty self-assigned this Jul 25, 2026
@murchandamus
murchandamus force-pushed the 2026-07-31-newsletter branch from ab44aaa to 7eaead6 Compare July 31, 2026 05:16
@murchandamus

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I added a warning about the Coldcard issue to the newsletter. It was late, I only read it a couple times, I would appreciate some extra scrutiny before publication.

@murchandamus
murchandamus force-pushed the 2026-07-31-newsletter branch from 7eaead6 to 7605f05 Compare July 31, 2026 05:21

@TumaBitcoiner TumaBitcoiner left a comment

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@murchandamus I made some suggestions!

As the situation was still developing, and the attack can easily be
reproduced, Bitcoin Optech recommends that Coldcard users whose wallets may be
affected move their funds carefully to an unaffected wallet as soon as
possible.

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possible.
possible. Please refer to the aforementioned security advisory
for migration information.

Maybe? I think it is important people are invited to read it first-hand

Coldcard Mk2, Mk4, and Mk5 models may be affected by less severe variants of the
vulnerability.

As the situation was still developing, and the attack can easily be

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Suggested change
As the situation was still developing, and the attack can easily be
As the situation is still developing, and the attack can easily be

Adjusted sequence of tenses. wdyt?

was generated externally.

Several developers were able to immediately reproduce the attack with frontier
model assistance. There were some reports that key material generated by

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model assistance. There were some reports that key material generated by
model assistance. There were also reports that key material generated by

Maybe?

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4 participants