A line swirling around the Earth that is in space filled with the binary numbers (zero and one). NSA's Information Assurance Directorate invites government employees throughout the nation to take advantage of the products, services, and programs we offer to help you secure your critical information systems. Peruse our TEMPEST product lists and descriptions to find exactly the product you need. Discover what the IAD is doing to ensure the security of the emerging Global Information Grid. Download the latest security guides, or enlist the services of IA professionals to help you engineer secure systems or assess the security of existing systems. Learn more about national-level IA programs like those available through the Interagency OPSEC Support Staff and the Information Assurance Training and Rating Program. Or register for IA-related events and conferences to get up-to-speed on the latest IA technologies. Whatever your Information Assurance needs, the IAD is here to help.