Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04215376c822618cb7c4f0f272b6f999b6bddb4a5f5dff64d3fd7ab6bc81735ea21a69969ad262cd2e79aa814d5fae30abd360c410cf3775861aef3b7ef31dd14d