Similarly faking web sites has not become an occupation yet. Usually the information you will find on the internet speaks for itself. It will come from well-meaning individuals or organizations who know more about the topic than you. There are, however, some further steps to consider. If the information is placed on a .gov web site, it comes from the government.
Corporate information is very important to companies.
Much internet information include dates and author information. Use your experience to judge if the information is coming from a professor of legal studies or just some bystander expressing an opinion. Web pages are usually password protected and passwords can be broken. Internet Security is a huge industry. Expect better protection in the near future.