Coinkite's pre-incident paper-spam warning
coinkite-paper-spam
- Organisation
- Coinkite
- Evidence role
- Vendor statement
- Published
- 2026-06-24
- Source changes
- 0
- Detected differences
- 0
- Unreviewed
- 0
- Copies held
- 1
Published five weeks before this incident, about a physical-mail campaign using a post-quantum firmware-upgrade pretext. States that Coinkite would never send a paper letter, that the mail is a scam, and that customer physical addresses are deleted after 120 days, which Coinkite attributes the targeting data to leaks elsewhere rather than a breach of its own. Held for two reasons: it establishes an impersonation playbook that predates the entropy disclosure and could be recycled against it, and it shows the vendor publishing exactly the kind of scam guidance that has not accompanied the entropy advisory.
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 2 Aug 2026, 01:00 UTC.
Snapshot and diff bodies for this chain monitor are held in the local evidence archive but withheld from the public site because they can contain victim addresses. Integrity hashes, capture times and reviewed change summaries remain available below.
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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.
What changed from the previous capture 0 lines
Extracted text as captured
Blog Careers Contact RSS Email Newsletter Store × Home Blog Careers Contact RSS Email Newsletter Store ← Back to posts Paper spam attempts Published Jun 24, 2026 Categories: ckcc Remember letterhead? Now it’s the Newest Affinity Scam! About Recent Physical Letters We have received concerns from a few of our customers regarding a letter apparently from “Coinkite” asking them to upgrade their firmware for “Post QUanTUM” reasons. This is a scam to steal your coins! Coinkite would never send you a paper letter! We delete all customer data, especially physical addresses, after 120 days. Coinkite does not use CRM tools or any external third party tools. Letters with branding of our wallet competitors have also been reported. Our support tickets (and emails) also get deleted on a schedule. We saw this in 2025, but this is a new round of letters in our brand style as well as our competitors. We are actively investigating the situation. So far it seems most of the data is aggregated from multiple sources of leaks from other crypto providers and data filled-in from other data leaks over the years. Looks like someone is funding a spray-and-pray campaign over snail mail! We are so used to email spam it feels weird. We recommend contacting support with more information so we can keep investigating. It’s very possible the customs and duties department of a country had a data leak. If it’s a large country, then thatExcerpt only. The complete copy is held offline and backs quotations on this site. The original publication remains the canonical public source.
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