Dont give away sensitive information with computer hardware.
Edit by : East-Tec DisposeSecure completely and securely removes all data from hard drives or disk partitions before return of leased assets or computer disposal. East-Tec DisposeSecure exceeds U.S. Department of Defense security standards.

East-Tec DisposeSecure supports the following data destruction standards:

National data destruction standards:

United States - Department of Defense: US DoD 5220.22-M
United States - Naval Information Systems Management Center: NAVSO P-5239-26 (RLL)
United States - Naval Information Systems Management Center: NAVSO P-5239-26 (MFM)
United States - Air Force System Security Instruction 5020: AFSSI-5020
Russian Federation - Federal Agency on Technical Regulating and Metrology: GOST P50739-95
Germany - Federal Ministry of the Interior: VSITR
Very secure industry trusted data destruction algorithms:

Peter Gutmanns Algorithm from the Secure Deletion of Data from Magnetic and Solid-State Memory paper
BRUCE Schneiers algorithm from the Applied Cryptography book
Additional new secure algorithm:

3+7+3 Beyond US Department of Defense Standards
Less secure but very fast data destruction algorithms for less sensitive information:

Quick, Single-Pass with Zeros
Quick, Single-Pass with Random Data you can free download East-Tec DisposeSecure 4.1 now.