The 5 worst illegal violations in my opinion would illegal searches online. bullying and trolling, using torrent services, and faking your identity. The first one is the worst because these searches can negatively impact people especially victims of cybercrimes like csam which is child sexual abuse material. Bullying and trolling is bad as well because it can cause people mental to be impacted which can lead to people committing suicide and potentially harming other people in the process.