They cannot access your funds, but they can see what addresses and transactions your wallet is querying for. So it's more of a privacy concern if you're using their servers.

rhombus

Mutiny wallet is non-custodial, but if you're using Mutiny wallet and their servers they can still access your funds, I think. If you use Mutiny wallet with your own server then you're truly non-custodial.

duvel

bitcoin

Your opinion on the Wallet of Satoshi

Jayden

Just to prevent further confusion, WoS is custodial:

Custodial = They hold and control your keys

Non-Custodial/Self-Custodial = You hold and control your keys

We need better, less confusing terms.