Defense-in-Depth
Defense-in-depth is a security strategy that uses multiple layers of defenses so that if one layer fails, others still protect the system. The idea comes from military fortification — castles didn’t rely on a single wall; they had moats, outer walls, inner walls, keeps, and so on. Breaching one didn’t mean the attacker won. In Information Security This translates to combining different controls rather than depending on any single one. A typical stack might include: ...