I have had the same experience. At the least, you would expect to be given an IP address:port of the remote PC being contacted to isolate the problem among potentially dozens of devices. For unknown reasons Cox will not provide this. Malware has become much more sophisticated in recent years, and some variants are said to be able to evade easy detection. JAVA and adobe flash are listed as primary vectors and should be uninstalled if possible. Before you write off the ZBot warning as a false positive, try some of the free tools found at the trusted malware removal sites such as bleepingcomputer or malwareremoval. The tools I have found particularly useful are eset online, rkill, SAS and the FRST diagnostic. For me, MBAM has been one of the least effective in recent years.
You should also consider the browser as a separate security issue. Refresh your browser whenever you suspect a problem. Also check your router FW and PC Bios.