Stealing the number will basically not be stolen. Regular third-party unpacking websites use Steam*** to enjoy information, unless they are lucky enough to meet a phishing website. But if the transaction is linked, it is possible that when you make a skin transaction, the trading quotation will be hijacked (that is, replace the malicious civet cat with a prince and pretend to be your trading partner).

If this is the login page, your account password will not be leaked.

If you don't enter the password and token of the Steam account on the page of the Steam platform, your account and password may be known by a third-party website (just learned, after all, you still need your Steam mobile phone token to operate the account).

In addition to api_key and transaction link, it's dangerous if you also provide the maFile file of Steam account yourself.

However, since you have uploaded the trading link of your account and set up the inventory disclosure, you should pay attention to the other account when you find strange trading quotation information.