Signal has a reputation as a “conditionally safe” messenger. “Conditionally” because it is attached to the telephone number. In Russia (and not only), this means the actual loss of anonymity. However, the messenger has a number of strong qualities. It is loved by experts in the field of digital security. In this article, we talk about some Signal settings related to safety. By default, we will use the example of Android smartphone, but almost all options are available in iOS.