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KYC: KILL YOUR CUSTOMER
The Bitcoin Brief

KYC: KILL YOUR CUSTOMER

September 14, 2026 · 01:16:58 · Max BBB
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INTRO
THANK YOU FOUNDATION
THANK YOU CAKE WALLET
The Privacy Tax
Kids Parties and Christenings
NEWS
KYC: Kill Your Customer
MORE NEWS
BOOSTS
UPDATES & RELEASES

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Show Notes

A weekly news show informing you on the latest in Bitcoin, privacy and open source tech, hosted by Ungovernables, Max and Q.

AOB

Max: spent a full day and roughly $100 in API credits on a marketing project using lower-end models rather than his normal Claude subscription -- couldn't use it due to privacy concerns around Ungovernable content; a warning that frontier model quality costs real money per token
Q: quiet weekend -- kids party Saturday, christening Sunday; off to Portugal on Friday

NEWS

Revolut hands passports and Bitcoin histories to a spoofed government request: attackers used a real government agency's email domain to extract passport scans, verification selfies, home addresses, and full transaction histories including Bitcoin activity; Revolut refuses to confirm the number of affected customers, the market, or the agency involved; attacker is now leaking customer files daily on Telegram and demanding 10,000 BTC -- CoinDesk, TechCrunch, Decrypt

Liquid exploit recovery: 3,400 BTC returned to block 965950 on September 7 via on-chain OP_RETURN negotiation; ~598.5 BTC (~$47M) remains with the exploiters; Blockstream refused the demanded 10% bounty, called it theft, and says it will work with law enforcement; block production resumed September 10 but peg operations remain suspended -- Bitcoin Magazine, news.bitcoin.com, CoinDesk, The Bitcoin Manual

Final CLARITY Act text drops: ethics deal done, developer protections narrowed; the Blockchain Regulatory Certainty Act now covers civil enforcement only with criminal protections removed -- including the charge brought against the Samourai developers; cloture vote is September 15 at 2:15pm ET, needs 60 votes; prediction markets put passage at ~25% -- The Crypto Times, The Block, The Hill, CoinDesk

Chinese quantum benchmark drops secp256k1 attack to 835 logical qubits, down 60% from the 2020 estimate of 2,124; current best hardware reaches 94 logical qubits; addresses with exposed public keys face the greatest future risk -- TFTC, CoinDesk

Alby Hub authentication bypass lets attackers drain Lightning wallets: critical flaw in v1.7.0 through v1.18.5 allows unauthenticated remote takeover when port 8080 is internet-accessible; at least one user confirmed compromised; update to v1.24.0 and block external access to port 8080 -- The Hacker News

Brevo breach lets attackers send phishing from Trezor, BitBox, and CoinTracking domains: attackers created API keys inside Brevo customer accounts allowing emails from real sending domains that passed SPF, DKIM, and DMARC; the lure was a fake STM32 Entropy Vulnerability alert targeting hardware wallet owners; Trezor and BitBox both confirmed the breach on September 9 -- CryptoTimes, Decrypt

RELEASES

Highlights

Electrs v0.12.0 -- 2026-09-13

  • Switches to the bindex indexing library. Requires Bitcoin Core 31 or later and a full reindex -- upgrade Core first and plan for downtime, especially on lower-powered hardware.

Fedimint v0.12.1 -- 2026-09-12

  • Security release fixing a vulnerability in the Lightning gateway's LNv1 payment handling. Gateway operators should upgrade immediately. The fix is consensus-neutral so federation participants and wallet users do not need to coordinate an upgrade.

Radar v1.0.7 -- 2026-09-12

  • Adds BOLT11 invoice payments alongside lightning addresses, scan-to-pay from the send screen, on-chain receive via bitcoin: URI, full balance hiding across the app, and Signal backup migration on a single device.

Bitcoin Seed Tool v2.4.0 -- 2026-09-11

  • Adds SeedQR scanning, Seed XOR splitting into 2-8 Coldcard-compatible shares, NIP-06 Nostr key derivation, BIP-44/49/84/86 descriptor export, and blank backup template printing. Also fixes seed leakage bugs -- existing users should update before use.

Phoenix v2.8.2 -- 2026-09-08 (Android), 2026-09-07 (iOS)

  • Adds Italian, Japanese, Polish, Ukrainian, and Korean language support. Android users can now manually set feerates on outgoing on-chain transactions, matching iOS parity.

BTCPay Server v2.4.4 -- 2026-09-08

  • Breaking-change release: NFC payments disabled by default at checkout, zero-amount invoices blocked by default, and Boltcard desktop setup removed in favour of the dedicated Boltcard app. Review the breaking changes before upgrading.

Ashigaru Desktop v1.4.5 -- 2026-09-07

  • Major catch-up release. Fixes broken HTTPS connectivity in earlier builds (missing crypto modules broke all outbound connections). Adds in-app update checking with signature verification, a guided tour, dice-based passphrases, and stronger Dojo node verification. Existing users on older versions must download manually.

Flint v1.1.0 -- 2026-09-07

  • Updates compatibility to BTCPay Server 2.4.4 and enforces Breez SDK Spark release gating. Upgrade alongside BTCPay 2.4.4. All artifacts signed with Sigstore build provenance.

Everything else

Amethyst v1.15.2 -- 2026-09-12

BasicSwap DEX v0.18.8 -- 2026-09-13

BasicSwap DEX v0.18.7 -- 2026-09-10

BDK FFI v3.1.0 -- 2026-09-12

Citrine v3.1.1 -- 2026-09-10

Core Lightning v26.06.7 -- 2026-09-11

Fedimint v0.11.3 -- 2026-09-12

JoinMarket-NG v0.39.2 -- 2026-09-12

LDK v0.2.6 -- 2026-09-10

LNbits v1.6.1 -- 2026-09-09

ngit-cli v3.0.0 -- 2026-09-08

Ride The Lightning v0.15.12 -- 2026-09-09

RoboSats v0.8.7-alpha -- 2026-09-10

Tor Browser 15.0.22 -- 2026-09-10

Trezor Suite 26.9.1 -- 2026-09-11

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FOUNDATION

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Foundation builds Bitcoin-centric tools that empower you to reclaim your digital sovereignty.

As a sovereign computing company, Foundation is the antithesis of today’s tech conglomerates. Returning to cypherpunk principles, they build open source technology that “can’t be evil”.

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CAKE WALLET

https://cakewallet.com

Cake Wallet is an open-source, non-custodial wallet available on Android, iOS, macOS, and Linux.

Features:
- Built-in Exchange: Swap easily between Bitcoin and Monero.
- User-Friendly: Simple interface for all users.

Monero Users:
- Batch Transactions: Send multiple payments at once.
- Faster Syncing: Optimized syncing via specified restore heights
- Proxy Support: Enhance privacy with proxy node options.

Bitcoin Users:
- Coin Control: Manage your transactions effectively.
- Silent Payments: Static bitcoin addresses
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Thank you Cake Wallet for sponsoring the show!

MYNYMBOX

https://mynymbox.io

Your go-to for anonymous server hosting solutions, featuring: virtual private & dedicated servers, domain registration and DNS parking. We don't require any of your personal information, and you can purchase using Bitcoin, Lightning, Monero and many other cryptos.

Explore benefits such as No KYC, complete privacy & security, and human support.

(00:00:00) INTRO
(00:00:41) THANK YOU FOUNDATION
(00:01:29) THANK YOU CAKE WALLET
(00:03:50) The Privacy Tax
(00:12:08) Kids Parties and Christenings
(00:15:56) NEWS
(00:16:14) KYC: Kill Your Customer
(00:28:00) MORE NEWS
(00:52:42) BOOSTS
(01:02:36) UPDATES & RELEASES