[NEW] GIAC Defensible Security Architect (GDSA)

Fundamental Layer 3 Defense (15%) Topics: CIDR and IP addressing, Layer 3 routing attacks and mitigations, SNMP and NTP security, Bogon filtering, Layer 2/3 benchmark tools.

Cloud-based Security Architecture (20%) Topics: Cloud security models (IaaS, PaaS, SaaS), Securing hypervisors, Network segmentation in cloud, Container security, Shared responsibility model.

Data Discovery, Governance, and Mobility Management (15%) Topics: File classification, Data Loss Prevention (DLP), Database governance, Mobile Device Management (MDM), Data mobility controls.

Data-Centric Security (30%) Topics: Reverse proxies, Web Application Firewalls (WAF), Database firewalls, Database activity monitoring, Encryption key management.

B. All users inside the corporate network are fully trusted.

C. Threat actors have already breached the network defenses.

D. Data encryption is unnecessary for internal traffic.

E. Antivirus signatures will catch all known malware variants.

F. Cloud environments share the exact same risk profile as on-premise networks.

Correct Answer: C

Explanation:

Option B is incorrect because blindly trusting internal users violates core Zero Trust principles.

Option C is correct because this principle dictates that systems must be designed under the assumption that attackers are already operating within the environment.

Option D is incorrect because internal encryption becomes critical when assuming the network is compromised.

Option E is incorrect because relying solely on signature-based detection is highly ineffective against advanced persistent threats.

Option F is incorrect because cloud models introduce distinct shared responsibility frameworks and different risk profiles.

Question 2: When implementing a Cloud-based Security Architecture utilizing an Infrastructure as a Service (IaaS) model, which of the following elements remains the strict responsibility of the cloud service provider?

B. Application logic vulnerabilities.

C. Physical data center security.

D. User access management.

E. Network traffic filtering rules.

F. Virtual machine data encryption.

Correct Answer: C

Explanation:

Option B is incorrect because the customer owns and must secure their own application code.

Option C is correct because the service provider retains absolute control over physical facility access and base hardware security in IaaS.

Option D is incorrect because Identity and Access Management configurations are handled directly by the customer.

Option E is incorrect because configuring virtual network security groups and firewalls falls under the customer's purview.

Option F is incorrect because the customer must manage and implement their own data-at-rest encryption strategies within their instances.

Question 3: In the context of Data-Centric Security, what is the most significant advantage of deploying a Web Application Firewall (WAF) instead of relying solely on a traditional Layer 3 network firewall?

B. A WAF natively handles all Database Activity Monitoring tasks.

C. A WAF inspects HTTP/HTTPS traffic for application-layer exploits like SQL injection.

D. A WAF replaces the need for standard data encryption key management.

E. A WAF manages Mobile Device Management (MDM) policies across the enterprise.

F. A WAF mitigates all Layer 2 broadcast domain attacks.

Correct Answer: C

Explanation:

Option B is incorrect because Database Activity Monitoring is a separate control focused on analyzing backend database queries, not web traffic.

Option C is correct because a WAF is specifically built to understand web application protocols and block application-specific attacks like cross-site scripting and SQL injection.

Option D is incorrect because WAFs do not perform encryption key management functions required for data at rest.

Option E is incorrect because MDM is a distinct governance control meant for securing mobile endpoints.

Option F is incorrect because WAFs do not operate at Layer 2 and cannot protect against local network broadcast storms.

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