Question: What is the primary security concern for the 'application/mbms-user-service-description+xml' media format in MBMS (Multimedia Broadcast/Multicast Service) environments, and what measures are recommended to mitigate this risk?
Option 1: Data privacy; Implementing end-to-end encryption.
Option 2: Network congestion; Utilizing Quality of Service (QoS) protocols.
Option 3: Device compatibility; Ensuring backward compatibility with older devices.
Option 4: Integrity and authenticity due to susceptibility to manipulation or spoofing; Recommending both integrity protection and source authentication.
Explanation: The 'application/mbms-user-service-description+xml' media format is vulnerable to attacks misleading receivers about a session. Protecting data integrity (preventing tampering) and authenticating the source (ensuring genuine origin) are crucial, addressing the primary security concern for this media format in MBMS environments.