So she made an app to prevent getting sexually harassed but this lead to her app code getting stolen and the app getting used to sexually harass her. If this isn't the best example why content piracy is wrong I don't know what is...
So to recap: Anna created the app, is Erika's neighbor and Tsumugi is her former landlady. Also the site it downloaded from had fake nudes of Rino.
Anyone want to bet that one of those three stole the source or uploaded it to that site?