A large and probably well funded entity is querying bitcoin nodes to link transactions to IP addresses.
Apply a block filter to your bitcoin core node to reduce the attack.
Wasabi users are not affected.
Discussion
#[2]
Dangerous indeed... 🤔
- Use Trezor with Tor enabled
- Try to get Non-KYC coins. If not possible, try to separate them from your identity using lightning network, tools like sideshift.ai and coinjoin (soon to be live in Trezor)
What is a block filter ?
Node behind Tor are not targeted I guess ?
Block filters don't help you against this attack.
A block filter is a compact representation of the addresses in a block, which helps to find out if you have sats.
However, the attack is spying on transactions that your node is broadcasting. The best way to protect here is to use a fresh tor identity for only this tx broadcast, which Wasabi does by default.
I didn’t know that it was possible to know from the outside that your node broadcasted a specific transaction as it also relays those from other peers. How can the attacker know exactly which tx is from me or my peers (and thus their peers) ? This is concerning