Câu 27: 312-39V2: Certified SOC Analyst (CSA) v2

Mark Reynolds, an SOC analyst at a global financial institution, is working on the eradication phase of an incident response plan after detecting a wave of phishing attacks targeting employees. To ensure attackers cannot reuse their malicious infrastructure, Mark implements a technique that blocks known malicious IP addresses used for sending spam emails at the Domain name system level. Which of the following techniques is best suited for this purpose?

1. A. DNS Blackholing — đáp án hiện tại
2. B. IP Address Blacklisting at the Firewall
3. C. URL Blacklisting on Web Proxies
4. D. SMTP Server Filtering