312-85 Exam Dumps : Certified Threat Intelligence Analyst (CTIA)

Fast-Flux DNS is a technique used by attackers to hide phishing and malware distribution sites behind an ever-changing network of compromised hosts acting as proxies. It involves rapidly changing the association of domain names with multiple IP addresses, making the detection and shutdown of malicious sites more difficult. This technique contrasts with DNS zone transfers, which involve the replication of DNS data across DNS servers, or Dynamic DNS, which typically involves the automatic updating of DNS records for dynamic IP addresses, but not necessarily for malicious purposes. DNS interrogation involves querying DNS servers to retrieve information about domain names, but it does not involve hiding malicious content. Fast-Flux DNS specifically refers to the rapid changes in DNS records to obfuscate the source of the malicious activity, aligning with the scenario described.References:

• SANS Institute InfoSec Reading Room
• ICANN (Internet Corporation for Assigned Names and Numbers) Security and Stability Advisory Committee

In the trust model described, where trust between two organizations depends on the degree and quality of evidence provided by the first organization, the model in use is 'Validated Trust.' This model relies on the validation of evidence or credentials presented by one party to another to establish trust. The validation process assesses the credibility, reliability, and relevance of the information shared, forming the basis of the trust relationship between the sharing partners. This approach is common in threat intelligence sharing where the accuracy and reliability of shared information are critical.References:

• "Building a Cybersecurity Culture," ISACA
• "Trust Models in Information Security," Journal of Internet Services and Applications

The Blueliv Threat Exchange Network is a collaborative platform designed for sharing and receiving threat intelligence among security professionals and organizations. It provides real-time information on global threats, helping participants to enhance their security posture by leveraging shared intelligence. The platform facilitates the exchange ofinformation related to cybersecurity threats, including indicators of compromise (IoCs), tactics, techniques, and procedures (TTPs) of threat actors, and other relevant data. This makes it an ideal choice for Kim, who is looking to gather and share threat information to develop security policies for his organization. In contrast, Cuckoo Sandbox is a malware analysis system, OmniPeek is a network analyzer, and PortDroid is a network analysis application, none of which are primarily designed for intelligence sharing.References:

• Blueliv's official documentation and resources
• "Building an Intelligence-Led Security Program," by Allan Liska