The dumb, dark box serving as Actin’s body had a memory that proved more useful than that of any sentient being. Four years ago, Bobby had fabbed a batch of patented immunosuppressant drugs, a job that stood out from his usual requests for mechanical devices. He’d dumped the job into the fabber sloppily, right from the network, without stripping its routing headers. In effect, he’d stored the pathway this drug spec had taken over the network along with the spec itself.