Since Symantec doesn’t provide an uninstaller script for their Enterprise Vault Client, here’s how to remove it on Mac OS.
Open a Terminal window and execute these commands:
launchctl unload -D user /Library/LaunchAgents/com.symantec.ev.daemon.plist sudo killall -m "Enterprise Vault .*" sudo rm -f /Library/LaunchAgents/com.symantec.ev.daemon.plist sudo rm -rf "/Library/PreferencePanes/Enterprise Vault.prefPane" sudo rm -rf "/Library/Application Support/Symantec Enterprise Vault" rm -rf "~/Library/Application Support/Symantec Enterprise Vault"
WebDiary.com 
This messed up my machine big time. Don’t do it.