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| Section | Objectives |
|---|---|
| Incident Detection and Analysis | - Threat intelligence usage in investigations - Log analysis and monitoring - SIEM fundamentals and alert handling |
| Incident Response Fundamentals | - Roles and responsibilities in incident handling - Incident response lifecycle and methodologies |
| Incident Reporting and Documentation | - Post-incident review and lessons learned - Incident reporting standards |
| Containment, Eradication, and Recovery | - Malware and threat removal procedures - System recovery and restoration - Containment strategies |
| Digital Forensics and Evidence Handling | - Chain of custody principles - Forensic analysis basics - Evidence collection and preservation |
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質問 # 230
Which of the following best describes an email issued as an attack medium, in which several messages are sent to a mailbox to cause overflow?
正解：A
解説：
Email-bombing refers to the attack where the attacker sends a massive volume of emails to a specific email address or mail server in order to overflow the mailbox or overwhelm the server, potentially causing it to fail or deny service to legitimate users. This attack can disrupt communications and, in some cases, lead to the targeted email account being disabled. Masquerading involves pretending to be another legitimate user, spoofing is the creation of emails (or other communications) with a forged sender address, and a smurf attack is a specific type of Distributed Denial of Service (DDoS) attack that exploits Internet Protocol (IP) and Internet Control Message Protocol (ICMP) to flood a target with traffic. Email-bombing specifically targets email services with the goal of causing disruption by overflowing inboxes.
References:ECIH v3 courses and study guides often include discussions on various attack vectors used by cybercriminals, including email-based threats and their impact on organizational security.
質問 # 231
During the process of detecting and containing malicious emails, incident responders should examine the originating IP address of the emails. The steps to examine the originating IP address are as follow:
1. Search for the IP in the WHOIS database
2. Open the email to trace and find its header
3. Collect the IP address of the sender from the header of the received mail
4. Look for the geographic address of the sender in the WHOIS database
Identify the correct sequence of steps to be performed by the incident responders to examine originating IP address of the emails.
正解：B
解説：
The correct sequence to examine the originating IP address of emails involves first accessing the email's header to locate the IP address, then using external resources to investigate that address further. The steps are as follows:
Step 2: Open the email to trace and find its header. This is the initial step because the header contains valuable information about the email's journey across the internet, including the originating IP address.
Step 3: Collect the IP address of the sender from the header of the received mail. This detail is crucial for the next steps in the investigation.
Step 1: Search for the IP in the WHOIS database. This database can provide information about the owner of the IP address, including the ISP and sometimes the geographic location.
Step 4: Look for the geographic address of the sender in the WHOIS database. With the IP address information obtained from the WHOIS search, the geographic location or the originating country of the email can often be deduced, contributing to the analysis of the email's legitimacy.
質問 # 232
An active vulnerability scanner featuring high speed discovery, configuration auditing, asset profiling, sensitive data discovery, and vulnerability analysis is called:
正解：B
質問 # 233
A security policy will take the form of a document or a collection of documents, depending on the situation or usage. It can become a point of reference in case a violation occurs that results in dismissal or other penalty. Which of the following is NOT true for a good security policy?
正解：C
質問 # 234
Marley was asked by his incident handling and response (IH&R) team lead to collect volatile data such as system information and network information present in the registries, cache, and RAM of victim's system.
Identify the data acquisition method Marley must employ to collect volatile data.
正解：B
質問 # 235
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