Internet filtering can help with safety and privacy for kids but also limits educational research. There are different types of filters like IP blocking and URL blocking but they are not perfect and can over or under block content. Piracy of movies and music is illegal but peer to peer software itself is not illegal, though it can introduce viruses. Free speech online is debated as some countries censor more than others. Teachers need to follow copyright laws for fair use of content in lessons. Gender imbalance in technology use can have negative effects. E-cheating and plagiarism are concerns when students misuse technology. Hacking can help students learn security but unethical hacking should be avoided. Many technology "myths" exist so things should be tested