Quick Answer
The correct answer is to report the email to the security team without opening the attachment. This is because phishing emails often carry malicious payloads, such as macro-enabled documents or executables, that can execute code the moment the attachment is opened, exploiting vulnerabilities in the email client or operating system. On the ISC2 Certified in Cybersecurity CC exam, this scenario tests your understanding of the incident response process, specifically the user’s role as the first line of defense—your job is to contain the threat by not interacting with it and escalating to the security team, who can analyze the email headers, attachment hash, and sender domain using sandboxing or threat intelligence feeds. A common trap is thinking you should forward the email to IT or delete it, but the exam emphasizes immediate reporting without any action that could trigger the payload. Memory tip: think “Stop, Drop, and Report”—stop interacting, drop the urge to open, and report to security.
This CC practice question tests your understanding of security operations. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A user reports that they received a suspicious email with an attachment claiming to be an invoice. What should the user do?
Report the email to the security team without opening the attachment
This allows security to investigate safely.
Reply to the email and ask for confirmation
Why wrong: Replying may confirm to the attacker that the address is active.
Delete the email immediately
Why wrong: Deleting may lose evidence needed for investigation.
Open the attachment to check what it contains
Why wrong: Opening could trigger malware; this is unsafe.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Report the email to the security team without opening the attachment
Option A is correct because the user should immediately report the suspicious email to the security team without opening the attachment. Opening the attachment could trigger a malicious payload, such as a macro-enabled document or executable, that exploits vulnerabilities in the email client or operating system. The security team can analyze the email headers, attachment hash, and sender domain using tools like sandboxing or threat intelligence feeds to determine if it is a phishing attempt or malware delivery.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Report the email to the security team without opening the attachment
Why this is correct
This allows security to investigate safely.
Related concept
Read the scenario before looking for a memorised answer.
Reply to the email and ask for confirmation
Why it's wrong here
Replying may confirm to the attacker that the address is active.
Delete the email immediately
Why it's wrong here
Deleting may lose evidence needed for investigation.
Open the attachment to check what it contains
Why it's wrong here
Opening could trigger malware; this is unsafe.
Common exam traps
ISC2 often tests the misconception that deleting a suspicious email is sufficient, but the correct incident response procedure requires preserving evidence and reporting to the security team for analysis and containment.
Detailed technical explanation
Suspicious email attachments often contain obfuscated scripts or exploit kits that leverage vulnerabilities in common applications like Microsoft Office (e.g., CVE-2017-11882) or PDF readers. The security team can use email security gateways (e.g., Cisco Email Security Appliance) to perform sandbox analysis of the attachment in a virtual environment, checking for indicators of compromise (IoCs) like unusual API calls or network connections. In a real-world scenario, a user opening a malicious invoice attachment could trigger a PowerShell download cradle that establishes a C2 channel, leading to data exfiltration or ransomware deployment.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
An employee at a financial services firm receives an email that appears to come from the IT helpdesk, asking them to reset their password via a link. The link leads to a convincing fake portal that harvests credentials. Security teams use phishing simulations and security-awareness training to reduce this attack vector. Questions like this test whether you can identify social engineering techniques and appropriate controls.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Security Operations — study guide chapter
Learn the concepts, then practise the questions
Security Operations practice questions
Targeted practice on this topic area only
All CC questions
500 questions across all exam domains
ISC2 Certified in Cybersecurity CC study guide
Full concept coverage aligned to exam objectives
CC practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise CC questions linked to Access Controls Concepts.
Practise CC questions linked to Business Continuity, DR & Incident Response.
Practise CC questions linked to Security Principles.
Practise CC questions linked to Network Security.
Practise CC questions linked to Security Operations.
Practise CC questions linked to CC fundamentals.
Practise CC questions linked to CC scenario.
Practise CC questions linked to CC troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Security Operations — This question tests Security Operations — Read the scenario before looking for a memorised answer..
The correct answer is: Report the email to the security team without opening the attachment — Option A is correct because the user should immediately report the suspicious email to the security team without opening the attachment. Opening the attachment could trigger a malicious payload, such as a macro-enabled document or executable, that exploits vulnerabilities in the email client or operating system. The security team can analyze the email headers, attachment hash, and sender domain using tools like sandboxing or threat intelligence feeds to determine if it is a phishing attempt or malware delivery.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 30, 2026
This CC practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CC exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.