Tagged: A state which describes a Runner when he has one or more tags.
As long as the Runner has at least one tag, s/he is considered tagged. Certain card abilities and effects require the Runner to be tagged, and while tagged the Corporation can trash the Runner's resources. The Runner can remove tags as an action.
As long as the Runner has at least one tag, he is considered to be tagged. […] Certain card effects can also trigger off of the Runner being tagged, and it is usually dangerous for the Runner to remain tagged for very long.