Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 040028b21575ba97c37c13e68b6e2a6e9c51f694dfd625613817d9c52bd9db2849319df00737da2e8bfcac8c3791361d27b473f3dddd230df269fec76ca52d51ba