Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04211781b24db33895be95103f039170a3d9f97f31c27178ecaeda9e72bea6af33c96f2388a9c8968decb423144fc1352e0e8bfb428fbec934fcd24a278dc82853