If you see a message like this, its pressuring you to do something fast so you DON'T think about what's really going on.
The goal of these scammers is to collect your deposit money and steal it. To collect infomation on you to steal your other crypto exchange infomation and get as much out of each person scammed.
If you have registered for the website
https://altfever.com this is the following steps your should take:
1) If you used the same e-mail as you normally do, but a different password. You are fine.
2) If you used BOTH the same e-mail and password as on other websites. CHANGE YOUR PASSWORDS! Any other service with the same Username/Password is AT RISK
Start with your e-mail account.
Next, Crypto exchanges with the same username/password.
Next, Accounts with the ability to buy things. Amazon/PayPal/Bank, so on.
Next, General Accounts. Social Media etc.
3) If you deposited to try and claim that giveaway, that Crypto is gone. Accept it. Move on. It might be hard but it must be done.
4) If you have submitted any sort of I.D. for verification. Treat it as though your wallet has been stolen. Make a police report so should your identity be stolen and used for something, you have a reference to say its not you. This will resolve any issues that come up!