How do you treat abuse? How do you treat copyright abuses? How do you treat illegal content? What laws are applicable to you? What will happen when you receive abuse on my website? Can you delete the content from my website if you get any abuse?
To protect your site from viruses and hacks, periodically perform simple prophylaxis: Periodically check the site for viruses and the inclusion of "harmful" codes. You can check it by making a full copy of the site, downloading, and checking the code of the site on your computer with antivirus.