How it works
Screen sharing sends the visible content of a display or application to another participant. Viewing and remote control are different permissions, although some tools offer both. The shared scope might be one window or the entire desktop, so notifications and unrelated documents can become visible depending on the selection.
A practical example
During a support call, showing one application can help explain an error without exposing every open document. If the helper requests control, that is an additional decision: they may be able to operate the computer within the tool’s permissions. A screen-sharing invitation alone does not verify the helper’s identity.
What to check
Confirm who is joining and choose the narrowest useful sharing scope. Close unrelated sensitive content and consider notification previews before starting. Read any control request separately and know how to end the session. On managed devices, use the approved tool and process; confirm whether the session is recorded and where that recording would be handled.
Limits and safe use
An encrypted session does not make the recipient trustworthy or prevent them from seeing what you voluntarily share. Stop sharing before entering private credentials or opening unrelated confidential files. Ending a session stops that connection but does not revoke separate accounts or persistent software installed during it. Unexpected support requests require independent verification.