These files can be printed to look like the original document, and cannot be edited. So anything published on the internet belongs to someone. In law, it is usually permissible to make one copy for your own personal use, and to use a reasonable amount of the document for the purposes of review, news or discussion. In this case, the original source should be cited. If in doubt, be guided by notices posted on the site.
People do lose money on the internet, but through fraud rather than hi-tech theft.
Cookies are items of information about your preferences, that a site can place on your hard drive. Many people resent cookies as an invasion of privacy, as they are 'planted' on your computer without you having much control. In practice, however, cookies can save you time getting the information you want from a site, and there is scant evidence of any problem associated with them. The Internet Content Rating Association has been set up to develop, implement and manage an internationally acceptable voluntary self-rating system which provides internet users world wide with the choice to limit access to content they consider harmful, especially to children. Freespeech on the internet is fiercely protected, and pornography is legal in most countries.