Lately, there are people posing as existing users to scam other users, even pretending to be DeviantArt users to steal their information, such as credit cards. And the worst part is that victims often end up reporting the real users by mistake. I mean, it's already happened twice that a user has stolen my username and avatar, and another user has reported me by mistake. The last thing missing is that I can no longer use DeviantArt because of a phishing victim's mistake.
I'm going to give you some advice to help you spot a fake user.
First, check the length of time the user's account has been active, as these users rarely post a day. Above all, check their content, as it also indicates a new account if they have very little content in their gallery or favorites.
In the case of fake DeviantArt moderators, if you receive a note from these users telling you they're suspending your account and requesting your credit card information, check your Gmail first. If that message isn't there