Ever since upgrading to Mac OS Yosemite, I've been experiencing unknown logon attempts to my work server -- the logon attempts are coming from my home computers. The work server is Windows 2008 SBS. The logon is using an incorrect password which is causing a lockout on my user account.
I have deleted the native VPN accounts thinking this might be causing the problem. But it still occurs. I installed the Sonicwall NetExtender Mac client application to connect to my work VPN because the native Mac VPN connection did not work after the upgrade to Yosemite (I understand there's a bug in the OS). However, I was observing the logon attempt behavior prior to installing NetExtender -- so I don't think it's related.
Is there a way to determine what is causing this behavior?