You Made An Antivirus That False Alarms On Winlogon.exe?

from here and here

Thanks to Graham Cluley for bringing to my attention what is, frankly, an inexcusable cock-up in this day and age. In 2016 it shouldn't be possible for an antivirus to false alarm on a critical system binary like winlogon.exe and cause the system to crash, but apparently that is what Sophos has done.