I almost logged into a copy once. The page was pixel-perfect: same banner, same promotion, same chat bubble in the corner. The only thing wrong was two letters in the address, and I noticed only because the browser had not filled in my saved password. That small failure of convenience was the tell. Since then I run the same short routine every time, and it has become automatic.
Step one: ask why I am here
How did I arrive at this page? If the answer is a link in a text message, an email about a bonus, a sponsored search result or a post on social media, I close it. Genuine operators are reachable by typing the address or from a bookmark I made myself. There is no legitimate reason to arrive at a login page by any other road.
Step two: read every character
I read the address bar aloud in my head, from the padlock to the first slash. Copies use substitutions that the eye slides over: a capital I for a lowercase l, a zero for an o, an extra hyphen, a different ending. The padlock means encrypted, not honest; copies buy certificates in minutes. Reading slowly is the only defence against a trick that depends on reading quickly.
Step three: trust the password manager
https://ninewins.net/bonus-code/
A password manager fills credentials only on the exact address they were saved for. If it stays silent on a page that looks familiar, the page is not where I think it is. This is the single most reliable signal I have, and it costs nothing.
Step four: cross-check from outside
For any site I am about to use for the first time, I find the operator in the public register of the gambling regulator for Great Britain, which lists the licensed domains. Ninewin Casino, like every licensed brand, appears there with its trading address. If the address in my browser is not on the licence, I have my answer. A clone can copy a footer; it cannot edit the regulator's list.
If something has already gone wrong
Change the casino password from a different device, change any password that resembled it, tell the bank, and forward the clone's address to the real operator's support. Online casinos are for adults only, and adults get fooled too; the aim is to make the window for fooling you as narrow as possible.