Скачать или смотреть ISO/IEC 19249 – Security Architecture Principles Explained!

🔐 ISO/IEC 19249 – Security Architecture Principles Explained! 🌐💡
In this video, we break down the five architectural principles and five design principles defined in ISO/IEC 19249 — the foundation of secure system design! 🚀

🧱 Architectural Principles:
1️⃣ Domain Separation 🏰
Group related components together and isolate them with specific security attributes.
💡 Example: x86 privilege levels — Kernel (Ring 0) vs User Apps (Ring 3)

2️⃣ Layering 🧅
Build systems in layers to enforce security at each level.
💡 Example: OSI Model’s 7 layers & abstraction in programming

3️⃣ Encapsulation 📦
Hide implementation details and expose only what’s necessary.
💡 Example: increment() method instead of exposing seconds variable directly

4️⃣ Redundancy 🔁
Ensure availability & integrity through backups and failovers.
💡 Example: RAID 5, dual power supplies

5️⃣ Virtualization 🖥️☁️
Run multiple systems on shared hardware while improving isolation.
💡 Example: Sandboxing malicious programs in VMs

🛡️ Design Principles:
1️⃣ Least Privilege 🧑‍🔒
Only give access based on the need-to-know or need-to-do basis.
💡 Example: Read-only access if editing isn’t required

2️⃣ Attack Surface Minimization 🔍🚫
Disable unnecessary services to reduce vulnerabilities.
💡 Example: Hardening Linux systems

3️⃣ Centralized Parameter Validation 🧪
Validate all inputs in one place to prevent attacks.
💡 Example: Use shared libraries for input checks

4️⃣ Centralized General Security Services 🏢🔐
Manage security (like authentication) from a single, secure point.
💡 Example: Centralized authentication server with redundancy

5️⃣ Error & Exception Handling ⚠️🔒
Design systems to fail safely and prevent info leaks.
💡 Example: Firewall should block all traffic if it crashes

🎯 Whether you're studying for a cert or building secure systems, understanding these principles is essential!
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#CyberSecurity #ISO19249 #SecurityArchitecture #Infosec #SecureDesign #Redundancy #Layering #Virtualization #LeastPrivilege #InputValidation #ExceptionHandling