Phishing, the biggest mystery since magnets? Well not really. We'll explain to you exactly how they work (phishing sites that is, not magnets, nobody knows how they work), and how to keep yourself safe.
There are actually way more phishing sites out there than there are legitimate market links since they're so profitable for scammers, since they get to keep 100% of the proceeds of anything they steal from you. But with some simple precautions, you can avoid being caught out and losing your hard earned cash.
Check links against multiple reputable sources
If you're unsure whether a link is legitmate or not, check it against several reputable index sites. The chances are if it's listed by several sites, it's genuine. If a particular site recommends a list of indexes for obtaining mirrors, then cross-check with those first.
Verify against a site PGP key
Most darknet sites on the Tor Network that entail financial transactions such as markets will provide a PGP key and signed mirrors. You can verify the signed mirror list against their PGP key using a program such as Kleopatra. This may not help you if accessing a site for the first time, but once you know a site is legit, it is advisable to save its PGP key for future reference in case your regular mirror is down and you find yourself searching for an alternative mirror. Many sites provide a list of their mirrors at /mirrors.txt. If it's a phishing site, it's likely it either won't exist at all, or will be signed with a PGP that differs from the real one.
Activate PGP 2FA
Many markets display the onion URL in the decrypted message you are provided when logging in via PGP Two Factor Authentication (2FA). This is one of the few outputs that attackers are not able to interfere with. If the onion URL listed does not match the one shown in your address bar, do not proceed and exit the site immediately. Learn more about PGP 2FA here.