It is normal for people to receive messages from unknown senders, but it is important to be cautious. It is best to avoid clicking on any links that are sent to you, as they may be malicious and could lead to identity theft or other security risks. It is also important to remember that an administrator or other trusted source will not randomly message you, so if you receive a message from an unknown sender, it is best to be extra cautious. Taking the time to verify the sender and the content of the message before clicking any links is a good way to protect yourself from potential security risks.