Anyone can confirm what they want on the Internet. There is no commission that requires information to be accurate or statements to be objective. The difference between commercial information, propaganda and similar sources is not always clear on the Internet either. Therefore, you have to continually research whether information is reliable enough and if you choose to use information found on web pages, you need to be extra careful and consider the role you will give it in your argument or analysis.
Besides the general criteria (module 4.1), you can apply the CRAP-test when evaluating internet sources: