used by the scp foundation in articles or reports. DATA EXPUNGED means the data was deleted from all records while Redacted means you need a higher clearance level to view the information.
The data recovered from the artifact shows that DATA EXPUNGED. research halted on order of the overseer council.
The idea that when something (such as data, memory or a particular object) inconveniently and inexplicably goes missing it is thought to have deleted itself out of impulse or intention, i.e. it has self-expunged.