Your Bitcoin wallet is talking to someone. Make sure it's you.
Running your own Bitcoin node doesn’t automatically mean your wallet is actually using it.
So here’s a small experiment:
Open the wallet you use every day.
Find its server/backend settings.
Who owns that machine?
I went deeper and turned this into a practical privacy audit: actual wallet connections, Electrum queries, electrs vs Fulcrum vs ElectrumX defaults, Bitcoin RPC, Docker ports, IPv6, Tor, SSH/VPN tunnels and external port testing.
There’s also a simple tcpdump test to see where the wallet connection really goes instead of trusting the settings screen.
The rabbit hole started because someone pointed out that I’d missed Electrum in my previous self-hosting threat model.
They were right.
So I audited the layer separately.
Full thing is free:
https://davidebtc186.substack.com/p/your-bitcoin-wallet-is-talking-to
If you run your own backend, what are you using — electrs, Fulcrum, ElectrumX or Core directly?
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