Like everything else in Signal, your profile is end-to-end encrypted. The Signal service does not have any knowledge of the name you have chosen or the image you have set.
What is my Signal Profile and who can see it?
Your Signal Profile is a name and picture that will be shown alongside your existing phone number when communicating with other users. It will be shared with any contacts you have saved in your address book, any people or groups in conversations you create, and any people or groups you explicitly approve.
How do I edit my profile?
- In Signal, tap your profile avatar to view settings.
- Tap your avatar, name, or Signal number.
- Tap the avatar or image to edit.
- Tap the name fields to edit.
- Tap Save.
Read more technical information in the blog post.