You can make sure information is reliable by using the CRAP test. The crap test is used to check the currency of a source, the relevancy of the source, the authority, and the purpose. Each of these factors can help you tell if the source is reliable. The currency test sees when the information was posted, this can help you tell if it is outdated, which could mean the the information is false. One other thing you could do is check the relevance, which checks the usefulness of the information. You can check the authority, which checks the source of the information. Finally the purpose, this checks why the information exists. If you use all of thee techniques you can see the verdict, unreliable, somewhat Unreliable, somewhat reliable and finally if it is totally reliable.