COLDCARD RNG incident the public record, collected and explained
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Open source is not a security property

ledger-open-source-security-position

https://www.ledger.com/blog-open-source-not-security-property

Organisation
Ledger
Evidence role
Vendor response
Published
2026-08-06
Source changes
0
Detected differences
1
Unreviewed
0
Copies held
2

Charles Guillemet's follow-up position on open source and security, published in the incident's aftermath and promoted by Ledger's already registered social post. Held as the direct article behind that response. Its comparisons and claims about Ledger's security model are the competing vendor's 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 · Captured here 12,185 chars
    Extracted text as captured 
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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.

1 presentation-noise difference. Sidebar, ticker and other page chrome churn that our review classified as not being a change to what the source says.
  • +3 -3 Only the More articles promotional carousel changed, swapping one Ledger product entry for another; the position text 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.