Earlier this month, video calls were made between the SpaceX mission control center and the Falcon 9 second stage and they were doing tours on social media. The leaked video showed views of the ground from the second stage missile and inside the liquid oxygen tank of the second stage missile. Ham radio users learned what frequencies SpaceX was using because the company needed to notify the Federal Communications Commission and the National Communications and Information Administration of the frequencies used to communicate with its missiles.
This condition meant that the frequencies were publicly available. After successfully capturing video and telemetry from the Falcon 9 launch, amateurs decided to capture similar footage from the Starship SN11 test. Point the user antenna at the SN11 prototype. While it was able to capture communication data between the test vehicle and the mission controllers, unlike the previous point in time, they were unable to decode the information.
While the communication between SpaceX and the Falcon 9 mission was previously unencrypted, SpaceX encrypted the data between the consoles and the spaceship. Chances are that SpaceX will always encrypt data for the Starship test flights and not bother to encrypt data for Falcon 9 missions.
Amateur radio users will certainly attempt to capture data from future Falcon 9 missions, and if that is now encrypted, SpaceX has taken steps to protect its data. Of course, the leaked data could harm SpaceX, and it goes without saying that all information should be encrypted.