Every website has a uniqueness and it's in its domain names. It's the standard that no two websites can ever have the same domain name, and same site extension name. so you may only need to check the URL and note suspicious ones.
This is indeed true and as true as it is, people have never stopped falling victim. I recall a thread here somewhere, asking users to spot the difference between 2 domain names and I tell you, it was the most difficult one I’ve seen ever.
There was literally no difference as, this domain names were said to use both Latin alphabets and English in its formation where the similar characters were utilized.
Now, you wouldn’t login on this site by inputting the characters yourself so, they are promoted by links. That’s the more reason why, it’s important you don’t depend on links to login some of your favorite sites, type in the characters yourself.