How do you know when a source is not credible?

Have you ever come across information about cryptocurrency or finance that seemed too good to be true? It's important to be able to discern when a source is not credible. So, how do you go about determining the reliability of a source? Do you check the author's background and qualifications? Do you verify the information with multiple sources? Or do you rely solely on the credibility of the platform or website where the information is presented? Understanding how to identify credible sources is essential for making informed decisions in the world of cryptocurrency and finance.