National Strategy to Secure Cyberspace
This document outlines an initial framework for both organizing and prioritizing efforts to protect against disruptions to our critical information systems and reduce vulnerabilities to cyber threats. The Department of Homeland Security's National Cyber Security Division (NCSD) has been charged with coordinating the implementation of the strategy.

E-Government Act of 2002, Title III - The Federal Information Security Management (FISMA) Act
The purpose of this Act is to enhance the management and promotion of electronic government services and processes. Title III of this act is the Federal Information Security Management Act of 2002. The E-Government Act permanently supersedes the Homeland Security Act in those instances where both Acts prescribe different amendments to the same provisions of the United States Code.

Office of Management and Budget Guidance on FISMA 
The subject of this memorandum is Reporting Instructions for the Federal Information Security Management Act and Updated Guidance on Quarterly IT Security Reporting.

Homeland Security Presidential Directive/HSPD-7
This directive establishes a national policy for Federal departments and agencies to identify and prioritize United States critical infrastructure and key resources and to protect them from terrorist attacks.