Hello,
Check this fix below which happened in the SEP 12.1 RU1 MP1 version.
Tamper Protection exceptions are not honored
Fix ID: 2580578
Symptom: Tamper Protection exceptions are not honored. An excluded process will trigger tamper protection.
Solution: The SEP client was sending a delta of the exclusion list to the BASH component. The client was modified to send the complete list to resolve this issue.
Reference:
New fixes and features in Symantec Endpoint Protection 12.1 Release Update 1 Maintenance Patch 1
http://www.symantec.com/docs/TECH187656
I would suggest you to please Migrate the SEP client to the Latest version of SEP 12.1 RU2.
You are running an RTM version of SEP 12.1.
What are the Symantec Endpoint Protection (SEP) versions released officially?
http://www.symantec.com/connect/articles/what-are-symantec-endpoint-protection-sep-versions-released-officially
Best practices for upgrading to Symantec Endpoint Protection 12.1.2
http://www.symantec.com/business/support/index?page=content&id=TECH163700