I know I’m being reiterative here, but please refrain from simply copying/pasting an article and adding a reference to avoid formal forum accusation of plagiarism. As I’ve mentioned multiple times, it is way better to summarize it in your own words, add your opinion, experience, or whatever. Any answer on this thread has taken longer to think through that what it took to paste the OP’s content (being the only tricky part adding the link).

As to the topic itself, @pooya87 has summarized nicely the counterpart to that the OP states, and that constitutes a mantra of overly repeated things to investigate. Truth is, people (including me) will find it hard to perform those tasks properly with the degree of knowledge and time required, and will usually fall-back to relying on what some review sites says (and we know how well that has played out more often than not).

Performing the required due-diligence steps, even if one is technically capable of understanding the ropes, is no guarantee, but may improve the odds of not being scammed upfront. The more you invest, the more you should try to cross-reference information, but it’s still a game of odds.