You need to call all the bureaus below and put your credit report on freeze. It is all automated but if you pay attention you can do it. The freeze is for one year.
Equifax P.O. Box 740256 Atlanta, GA 30374-0256, 800-685-1111
Experian P.O. Box 9701 Allen, TX 75013 , 888-397-3742
Trans Union, P.O. Box 1000, Chester, PA 19022, 800-909-8872
The following link provides 3 free credit reports (Trans Union, Experian and Equifax) once a year with no score. These sites are not hard inquiries on your report and will not impact your score.