Police can always fabricate intent (this is not specific to Germany - they can just say you told them you were going to hack someone, or your actions or body la

Police can always fabricate intent (this is not specific to Germany - they can just say you told them you were going to hack someone, or your actions or body language obviously showed it) and then in practice it's up to you to show an alternative interpretation of facts. If you're studying computer security, that might get you off - but who better than a computer security student to do actual hacking?