People are sending messages to Ghast about EMBER-2. Ghast may publish the information in Trash World News. Hack his messages so that they are no longer about EMBER-2.
"Find and replace the keywords in the target message (file 212) as directed by EMBER-2. A list of keyword pairs indicating which words should be found and what they should be replaced with is available in file 300. For example, the keyword AI should be replaced with the keyword COLLECTIVE. Each keyword will only occur once, but may occur in any order. Also, move file 200 to the outbox."