This question aligns with CHFI v11 objectives under Network and Web Attacks and Network Log Analysis , particularly the interpretation of Cisco firewall (ASA) log messages . Cisco ASA firewalls use numeric mnemonics to categorize and describe specific security events. Understanding these mnemonics is critical for forensic investigators when reconstructing attack attempts and identifying malicious network behavior.
The Cisco ASA message ID 106022 corresponds to a "Deny protocol connection spoof" event. This log entry is generated when the firewall detects a packet with a spoofed source address , meaning the packet's source IP does not match the expected routing or interface from which it was received. Such behavior is commonly associated with reconnaissance, evasion attempts, or denial-of-service attacks.
CHFI v11 emphasizes that spoofed connection attempts are strong indicators of malicious activity and are frequently logged by perimeter security devices. By analyzing this log, investigators can identify attempted impersonation, trace attack origins, and correlate events across network devices.
The other options represent different Cisco ASA mnemonics, such as ICMP filtering, reverse path forwarding (RPF) failures, and teardrop attack detection. Therefore, based on Cisco firewall logging patterns, the correct description for mnemonic 106022 is "Deny protocol connection spoof from source_address to dest_address on interface interface_name."

According to the CHFI v11 Web Application Forensics and WAF module , the primary function of a Web Application Firewall (WAF) is to inspect, monitor, and filter HTTP/HTTPS traffic between a web application and its users. Unlike traditional network firewalls, which operate at the network or transport layer, WAFs function at the application layer (Layer 7) and are specifically designed to protect web applications from attacks such as SQL injection, Cross-Site Scripting (XSS), command injection, file inclusion, parameter tampering, and cookie poisoning .
WAFs such as ModSecurity analyze web requests and responses using rule-based logic, signatures, anomaly detection, and behavioral analysis . CHFI v11 emphasizes that WAF logs are critical forensic artifacts, as they record blocked requests, rule violations, payload details, source IP addresses, timestamps, and attack patterns. These logs allow investigators to detect, reconstruct, and attribute web-based attacks during forensic investigations.
The other options do not describe the primary function of a WAF. Encryption of web traffic is handled by SSL/TLS, not WAFs. DDoS protection is typically managed by network-level or cloud-based mitigation systems, although some WAFs may offer limited support. System log monitoring is the role of SIEM solutions, not WAFs.
Therefore, as defined in CHFI v11, the core purpose of a Web Application Firewall is inspecting and filtering HTTP traffic to protect web applications , making Option A the correct and verified answer.

Option A is the best answer because CHFI v11 explicitly includes Rules of Evidence , Best Practices for Handling Digital Evidence , Seeking Consent , Obtaining a Warrant for Search and Seizure , Legal Issues, Privacy Issues and Legal Compliance , and the Role of Local/International Agencies during Cybercrime Investigation . When a server is shared with another company , privacy and ownership concerns become especially important, and the initial step should be to consult the appropriate legal and organizational stakeholders before taking action.
Immediately seizing the server or ignoring privacy implications could violate legal boundaries and compromise admissibility. Avoiding the server entirely may also be inappropriate if it contains critical evidence. Likewise, jumping straight to a warrant may not be the most suitable first move until counsel and management clarify ownership, scope, privacy exposure, and the least intrusive legally defensible path.
Therefore, the strongest CHFI-aligned initial approach is to consult legal experts and company management to determine the correct lawful path forward before attempting access or seizure. That protects privacy rights, preserves admissibility, and aligns the investigation with proper search-and-seizure procedure.

Option C is the best answer because CHFI v11 places strong emphasis on lawful evidence handling, search and seizure requirements, privacy compliance, and cloud forensics procedures . The exam blueprint specifically includes "Google Workspace Forensics" under cloud-related forensic activities, which means investigators are expected to follow recognized forensic and legal procedures when collecting evidence from cloud-hosted services. It also separately lists "obtaining a warrant for search and seizure," "seeking consent," "preserving evidence," and "chain of custody" as core legal and procedural requirements for digital investigations.
Choices A and D are incorrect because they ignore due process and risk making the evidence inadmissible or improperly obtained. Choice B is cautious, but it does not directly satisfy the formal legal requirement for acquiring evidence from a cloud account. In CHFI terms, a forensic examiner must combine cloud forensics methodology with rules of evidence and legal authorization . Therefore, obtaining proper judicial or legal authority before accessing a Google Workspace account is the most defensible and CHFI-aligned response.

Option D. GLBA is the correct answer. The Gramm-Leach-Bliley Act (GLBA) is the U.S. law enacted in
1999 that requires financial institutions to explain their information-sharing practices and protect sensitive customer data through safeguards. That description matches the scenario exactly. Within CHFI v11, legal awareness is a core competency: the blueprint includes legal issues, privacy issues and legal compliance , other laws that may influence computer forensics , and rules tied to the admissibility and handling of digital evidence.
The other options do not fit the facts. GDPR is a European data protection regulation, not a 1999 U.S.
financial law. HIPAA governs protected health information in the healthcare sector. PCI DSS is an industry security standard for payment card data, not a law enacted in 1999 requiring disclosure of information-sharing practices. Because the company is a financial institution and the question highlights both privacy notice and safeguarding customer information , GLBA is the only answer that fully matches the scenario.
From a CHFI perspective, recognizing applicable legal frameworks is important because investigators and compliance personnel must understand which laws govern digital evidence, privacy obligations, and organizational handling of sensitive information.