Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04816c8fbdb2639e0530e86e3bd0f0d47171091a48ce7c2fcf80dd972decbe0a4c51d23d064d6a82efe18468ef0cb6a05a3ff1c7a2114e38971a85834a69e9281d