Defense In Depth

What Does Defense In Depth Mean?


Defense in depth is the act of using multiple security measures to protect the integrity of information. This method addresses vulnerabilities in technology, personnel and operations for the duration of a systems life cycle.

Techopedia Explains Defense In Depth

This is simply the use of multiple layers of defense placed throughout an information system. With multiple layers the outermost layers are the first line of defense and work well against the smallest and most common attacks. More powerful and unconventional attacks get past the first few layers but will be stopped by the deeper, more concentrated layers. The concept was conceived by the National Security Agency (NSA) as a comprehensive approach towards information and electronic safety.


Related Terms

Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…