David Schwartzberg is a Senior Security Engineer at Sophos, a data security company where he specializes in full disk encryption. After David graduated from Queens College with a B.S. in Accounting and Information Systems, he has earned several certifications in the field of Information Technology including CNA, CNE, MCP, Network+, Security+ and CISSP. David wrote the original CramSession study guide for the Network+ certification in 1999. Utilizing his 6 years accounting experience and 16 years Information Technology experience, he speaks regularly with technology executives and professionals to help protect their corporate secrets and stay compliant through the use of encryption and access control software. Prior to his current position, he provided strategic solutions for secure email and managed file transfer at Tumbleweed Communications.