Lost Ark Support
If you think your Steam account was compromised, try the following steps to make your account more secure.
Clear your browser cache to clear saved passwords.
Reset your Steam password with Steam Support.
Enable two-factor authentication for your Steam account. Visit Steam Support for steps to add this extra layer of protection to your Steam account.
Change your email password.
Log into your Steam account, and make sure no additional email addresses were added. Visit Steam Support for more information on compromised accounts.
Please note, unfortunately, we're unable to restore in-game content missing as a result of an account hack.