This is almost certainly Windows Defender. It has been more and more
of a problem in recent months. It could be other antivirus software as
well, but Windows Defender is the most common culprit. Temporarily
suspend such software while downloading, install...
With ZBrush 4R8, some antivirus software has reported a Trojan during
What it is referring to is Netcat
[https://en.wikipedia.org/wiki/Netcat] (or nc.exe). This is a
framework that simplifies communication between programs or computers.
Some users on Mac OS X have reported that the bonus content installer
for KeyShot is shows as being damaged.
There's actually nothing wrong with the file -- except that certain
OS X security settings don't like it.
Simply change your OS X securit...