Skip to content

docs: add Coldcard Mk3 seed-entropy security notice to plugin README #10805

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ecdsa merged 2 commits into from
Aug 6, 2026
+4 −0
Merged

docs: add Coldcard Mk3 seed-entropy security notice to plugin README #10805

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
48086cc
docs: warn about Coldcard Mk3 seed-entropy advisory (Coinkite, Jul 2026)
nrobi144 Aug 6, 2026
409325f
docs: remove unicode from Coldcard security notice (per maintainer re…
nrobi144 Aug 6, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions electrum/plugins/coldcard/README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,9 @@
# Coldcard Hardware Wallet Plugin

## Security notice

Coinkite disclosed (July 2026) a firmware build error that reduced generated-seed entropy on **Coldcard Mk3** (firmware 4.0.1-5.0.3) and pre-fix **Mk4/Q**. Seeds generated on-device without extra dice rolls may be brute-forceable. Update to fixed firmware, generate a new seed and move your funds. See the [Coinkite advisory](https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/).

## Just the glue please

This code connects the public USB API and Electrum. Leverages all
Expand Down