securit context of asynchronous workflow

I create a workflow and set the scope to User (default). So I own the workflow. When another user  makes bulk changes on records that will trigger the workflow, which records will this workflow affect?

Will it affect only the records owned by me since I am the owner of the workflow or will it  affect only the records owned by the user who triggered it.

or will it affect both of ours records in which bulk edit has been made.

Thanks in advance