Using unofficial streaming services is very popular and seems harmless but it is more dangerous than you think. If they’ve stolen film content from production companies, what would stop them from stealing your data as well?

Through torrents, copyrighted material can be accessed without paying for it. This is illegal and unfair to the creator because they lose money when people steal their creations without their permission. 

Using copyrighted images without permission, payment, or attribution is dangerous because you can this will lead to a hefty fine. 

Sharing passwords, addresses, or photos of others is dangerous for obvious reasons. This could lead attackers to hack your accounts, and addresses could put yourself or others at risk, same with posting others. You could also be invading their privacy if they did not want to be posted. 

Bullying and trolling is another obvious one. Cyberbullying and trolling could lead to victims harming themselves or others. There are several laws regarding cyberbullying, usually, it is treated as a civil matter but sometimes turns into criminal offense charges and jail time.