A clipboard in an electronic system protects sensitive data by copying data into a clipboard of an electronic system as an entry and selectively blocking access to the sensitive data. For example, the clipboard can be arranged to protect clipped data that is based on a received web page or similar communication. An entry protect status is associated with a clipboard entry that is arranged to store copied data that is sensitive. The entry protect status is changed to indicate the entry protect status is set to block access to the copied data. Access to the copied data for which the entry protect status has been changed is selectively blocked.