If your Steam Account has been stolen or hijacked, you should complete the steps below before recovering your account to ensure the account is not stolen again.
Step 1 - Scan your computer
Viruses, key loggers, spyware and other malicious code can steal your Steam Account name and password. Before resetting your Steam Account's password, you should run virus and spyware scanners to ensure such programs are not on your computer.
Step 2 - Change your email's password
Steam accounts are commonly compromised after an associated email address is compromised. Changing the password on your email account will ensure a hijacker can't steal your Steam account a second time, or interfere with assistance from Steam Support.