Hello,
Question Arises WHY are you so afraid?
Is this a Official Laptop or your Personal Laptop?
Symantec Security Softwares are for good and not for bad.
In your Question/ doubt above, it shows you are either more worried installing Enterprise Protection Software or Boss invading your Privacy.
If in case, your Boss wants to invade and find about everything about your Machine, he would have full rights if in case this machine is a Office Laptop.
However, in your case to just clarify you, the Symantec Endpoint Protection 11 is a security software and not a Spy software.
In case, if the boss has provided you a Symantec Enterprise Security Software (Symantec Endpoint Protection 11), of course it costs for the License of that software.
To ensure, you have full control over the software, make sure it is installed as a Self Managed Client, so that he does not have control over the Software and you do.