How To CoinJoin with Sparrow Wallet
https://www.whatisbitcoin.com/guides/how-to-coinjoin-with-sparrow-wallet
Discussion
Yikes, anyone who follows that guide will have all their coinjoins deanonymized by the Whirlpool coordinator since Tor setup is not included ❌️
This is especially dangerous since each user who follows this guide will cause collateral damage by degrading the privacy of other coinjoin participants (who actually are using Tor) via Sybil attack.
I appreciate the feedback.
Are you here to shill Wasabi?
No, Tor by default is not only deployed in Wasabi, but Joinmarket, BTCPay Server, and Trezor as well. It's a critical component of preserving your privacy when coinjoining.
This is the SECOND guide for Sparrow Whirlpool I've seen that fails to include Tor: https://bitcointalk.org/index.php?topic=5470024.0
With this sort of widespread miseducation/misconfiguration happening, Samourai's coordinator is able to harvest a huge amount of Sparrow user data that they can use for blockchain analysis.
I’ll look into this in greater detail.
As for Wasabi, even with Tor, Wasabi “CoinJoins” are routinely broken with even basic chain analysis. There’s a team of Bitcoiners actively helping the guy who had 25 bitcoin stolen from him. It’s quite easy to follow the flow of money on-chain post Wasabi mix.
…and you can’t even use Wasabi’s coordinator because they are in bed with chain analysis and block UTXOs if they don’t like them.