Host-based antivirus solutions have continued to shift much of their pre-emptive detection technology into the cloud. In the wake of governmental Internet monitoring programs, more questions than answers are arising about who sees what, and precisely what do they do with this raw but likely confidential information. While the egress of confidential files and their contents may be worrying, I suspect that many corporate users can appreciate the sometimes problem of confidential and personal files being passed to the cloud, where some remote system or cluster of analysts will eventually peruse and pass judgment on its maliciousness.”]
Source: https://www.darkreading.com/attacks-breaches/confidential-submission-to-the-antivirus-cloud