There is no way to do it unless you are the admin.
1 Answers · Computers & Internet · 24/09/2008
... like your account was hijacked. Submit a steam support ticket with the account name and original contact email. They will reset the...
2 Answers · Computers & Internet · 06/08/2009
you could always go to the login screen click on the forgotten password button answer the secret question and have steam email your password to you then login to steam and change your password to something new that nobody knows? hope this helps
2 Answers · Computers & Internet · 09/01/2008
You don't come to YA when something like your " steam " account was hacked, you go to steam , they should be able to sort it...
3 Answers · Computers & Internet · 16/01/2013