Blackbirds Security Philosophy: Features of a High-Quality Security Program
6. Utilizes Security in Depth
Security-in-depth methodologies reduce organizational vulnerabilities by avoiding reliance on any one defensive technique. Redundant layers of protection are deployed so the failure of a single security measure wont cause failure of the systems security as a whole.
A robust anti-virus configuration provides an illustration of security in depth:
- Incoming email messages are scanned for viruses when they enter the network. Recognizably viral attachments are removed; unsafe email attachments are removed even if they arent recognizably viral.
- Desktop anti-virus tools scan email attachments for viruses before the attachments are detached or opened.
If a security-in-depth approach is to be beneficial, the layered components must be designed to work in concert.
