We have 40 users using the desktop client. Just under two weeks ago, we started experiencing file deletions from our windows server. The odd thing is that we might lose 10, 20 or 60,000 files but all directories are left intact. Given the speed of the deletions, this has to be a script based process. After matching the last time period for deletions with the owncloud log on the server, it appears that we have identified the machine causing the deletions but we do not yet have a cause.
Neither Microsoft Defender, Malwarebytes nor eset have identified a virus. Has anyone experienced this in the past and if so, did you ever find the cause?