Hello asenthil,
welcome to the Polycom Community.
If the phone is connected to a secure provisioning server this should not be a problem.
In addition you can encrypt the configuration files. For more details check the Admin Guide of your currently yet unknown software version.
Please contact your Polycom reseller for more details.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services