COLDCARD RNG incident the public record, collected and explained
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Informational only. This is an open source collection of what others have published about the incident, together with an explanation of it. It is not financial, security or legal advice, and not a substitute for professional advice about your own situation. It is not affiliated with, endorsed by, or speaking for Coinkite. Material is attributed and quoted as published; where sources disagree their scenarios are kept separate with their assumptions rather than reconciled into one answer. Everything is meant to be checked against the linked evidence rather than taken on trust. Act on your own judgement about a particular situation. Editorial standards and corrections.

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The COLDCARD incident

ledger-primary-incident-article

https://www.ledger.com/blog-coldcard-incident

Organisation
Ledger
Evidence role
Vendor response
Published
2026-08-02
Source changes
0
Detected differences
4
Unreviewed
0
Copies held
5

Ledger chief technology officer Charles Guillemet's primary incident article, covering Ledger's account of the mechanism, entropy, certification, source availability and AI-assisted exploitation. Held directly rather than through the Reddit relay that first led to it. Ledger is a competing wallet vendor and the technical and comparative claims are its own.

Every check is recorded, including checks that found no text change. A detected edit is therefore bounded between two checks. The publisher's exact save time is not observable from this record. Last checked .

  1. Earliest copy held
    seen · Internet Archive 12,563 chars replay

    Recovered from the Internet Archive rather than captured by this project. The row records that third-party provenance separately from captures made by this project.

    Extracted text as captured 
    Ledger Wallet™ just got another major upgrade
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    Excerpt only. The complete copy is held offline and backs quotations on this site. The original publication remains the canonical public source.

4 presentation-noise differences. Sidebar, ticker and other page chrome churn that our review classified as not being changes to what the source says.
  • +3 -3 Only Ledger product-promotion banners and the top navigation chrome changed. The incident article body was unchanged.
  • +105 -81 Only the page's language-selector menu changed, adding Simplified Chinese and Arabic entries and reordering the list.
  • +133 -31 Only Ledger product-promotion banners and the language-selector chrome changed. The incident article body was unchanged.
  • +3 -2 Only the top promotional banner text for Ledger products changed. The article body was unchanged.
How to check this yourself

The excerpts and plain unified diffs above show the text this project held and how it changed. To verify a quotation, compare it against the page itself or against the Internet Archive's copies, which are independent of this project.

Complete captures are held offline rather than mirrored here, so this page shows diffs and excerpts. If a quotation is ever disputed, the full copy can be produced. Ask.