Snail Mail Phishing Targets Trezor and Ledger Wallet Users for Crypto Theft


Crooks send fake letters posing as Trezor and Ledger support to steal crypto wallet recovery phrases. Victims scan QR codes under urgency for “mandatory checks.” Sites then grab 12-24 word seeds to drain funds.

Letters use fake letterhead from security teams. Trezor version warns of “Authentication Check” deadline February 15, 2026. Ledger pushes “Transaction Check” by October 2025. QR leads to trezor.authentication-check[.]io or ledger.setuptransactioncheck[.]com.

Sites mimic official setup. They claim new devices skip steps. “Get Started” leads to seed entry pages. Phrases POST to /black/api/send.php backend. Trezor site lives (Cloudflare blocked); Ledger offline.

The Trezor phishing page displays a warning that users must complete an authentication check by February 15, 2026, stating:

“Complete Authentication Check setup by February 15, 2026 unless you purchased a Trezor Safe 7, Trezor Safe 5, Trezor Safe 3, or Trezor Safe 1 after November 30, 2025. In that case, it is already pre-configured, and no action is needed,” reads the phishing site.

Past breaches leaked Trezor (66,000 users) and Ledger (270,000 addresses) data. Physical scams rare but effective, beating email filters.

Trezor warns: “Trezor will never ask you to enter, scan, upload, or share your recovery phrase.”

Ledger states: “Ledger will never ask for your 24-word recovery phrase. Never enter it on a website.”

Phishing Sites Table

TargetDomainStatusPayload
Trezortrezor.authentication-check[.]ioLive, blockedSeed grab API
Ledgerledger.setuptransactioncheck[.]comOfflineFake check page ​

Scam Tactics

  • Urgency deadlines create panic.
  • Fake models like Trezor Safe 7/5/3/1.
  • Supports 12/20/24-word seeds.
  • Mimics real features like passphrases.

Never share seeds. Enter only on hardware during restore. Report to firms.

Protection List

  • Ignore unsolicited mail from wallet makers.
  • Verify via official apps/sites only.
  • Move funds if seed exposed.
  • Use passphrases for extra security.

FAQ

Why snail mail for phishing?

Bypasses email filters; data from past breaches targets users.

What happens if seed shared?

Attacker imports wallet, steals all funds instantly.

Trezor/Ledger ever ask for seeds?

No, never via mail, email, or sites.

Sites still active?

Trezor yes (blocked); Ledger no.

Past similar scams?

Fake Ledger devices mailed in 2021.

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