Submit a Ticket to Steam Support
Immediately Contact Steam Support about the lost account
Provide the following information:
1.Steam account name for hijacked account
2. The original contact e-mail for the account
3.Select “Account Questions” as the category and “Hijacked or Stolen Account” as the subcategory.
4.Proof of purchase for the account as outlined below:
◾If retail software is registered to the account, attach a digital photo or scan of the CD Key registered to the account. Write your Support Ticket Number on the quick reference card or CD Key sticker below the code in permanent ink.