Norton Security

Since this is my first post, I'm not sure if is the proper venue for this concern but here goes.  I'm running Norton's Security on my machine and when I install Knime, I receive all kinds of unsafe warning messages advising me not to install.  Is there something that can be done to remedy this action?  I'm trying to get others to become familar with Knime but this security warning makes things difficult.  Thanks in advance for any contructive replies.