An event that changes the security of a communication session between communication endpoints is determined. The event that changes the security of the communication session between the communication endpoints occurs after the communication session is established. For example, the event may be where a user has enabled a speakerphone. In response to determining the event that changes the security of the communication session between the communication endpoints, a message is sent to the communication endpoints that indicates a changed security level. The communication endpoints display the changed security level to the participants of the communication session. For example, the changed security level when the speakerphone is enabled may indicate that the communication session is now unsecure.