A TCP Xmas scan is a type of network scanning technique used by attackers to identify open ports on a target machine. The name "Xmas" comes from the set of flags that are turned on within the packet, making it 'lit up like a Christmas tree'. Specifically, the FIN, PSH, and URG flags are set, which corresponds to the hexadecimal value 0X029 in the TCP header's flags field.
Wireshark, a popular network protocol analyzer, allows users to create custom filters to detect specific types of network traffic, including malicious scanning attempts. By using the filter tcp.flags==0X029, Rose can detect packets that have these specific flags set, indicating a potential TCP Xmas scan attempt.

Shally has incorporated the Defense-in-depth strategy into the incident response plan for Texas Pvt. Ltd. Defense-in-depth is a layered security approach that involves implementing multiple security measures and controls throughout an information system. This strategy is designed to provide several defensive barriers to protect against threats and attacks, ensuring that if one layer is compromised, others still provide protection. The goal is to create a multi-faceted defense that addresses potential vulnerabilities in various areas, including physical security, network security, application security, and user education.

SSRF vulnerabilities allow attackers to coerce a server into making unauthorized internal or external requests. The ECIH Web Application Security module states that controlling outbound traffic is the most effective mitigation against SSRF.
Option D is correct because restricting outbound traffic ensures that even if an SSRF flaw exists, the server cannot access internal resources or attacker-controlled endpoints. ECIH emphasizes network- level egress filtering as a primary defensive control for SSRF.
Option A reduces attack surface but does not stop exploitation. Option B addresses client-side risks, not server-side requests. Option C improves detection but does not prevent exploitation.
Thus, outbound traffic restriction is the priority mitigation measure.

This scenario focuses on user-driven mitigation of phishing threats, a key element of the ECIH Email Security Incident Handling module. Aarav's guidance directly reinforces one of the most important user best practices: never engage with suspicious emails.
Option D is correct because avoiding replies or forwarding suspicious emails prevents attackers from validating active accounts, spreading malware, or escalating social engineering attacks.
ECIH emphasizes that user interaction often determines the success of phishing campaigns, making awareness and behavior critical controls.
Option A is unrelated to security. Option B is a sender-side control, not a user response. Option C may reduce accidental clicks but does not address the broader behavioral risk.
By instructing users to report, delete, and avoid engagement, Aarav strengthens the organization's human firewall, which ECIH recognizes as essential in reducing phishing impact.