Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04b21bd2987e664088735f329e8469d273fc8df15a7d57f07fc2ab99af3a741926a6be339bd294c4e28f6545c6b67d4f5badaf88668d5cd8d397dc4f0bf5878491