- A
Reply to the email asking for confirmation of the new bank details.
Why wrong: Replying through the same message chain still trusts the potentially spoofed sender and can expose more details.
- B
Verify the request using a known phone number or portal from previous records before taking action.
Using a known out-of-band contact method confirms whether the request is legitimate without trusting the suspicious email path.
- C
Forward the email to the vendor's entire contact list to warn them immediately.
Why wrong: Broadcasting the message can spread the phishing attempt and may not preserve evidence for investigation.
- D
Open the attached invoice to check whether the payment information matches past records.
Why wrong: Opening attachments from a suspicious message increases risk and does not validate the sender's identity.
Quick Answer
The correct next action is to verify the request out-of-band using a known phone number or portal from previous records. This is because the email exhibits classic signs of a business email compromise (BEC) attack—specifically a typosquatted sender domain and urgent payment redirection—which means any reply or action taken within the compromised email channel could be intercepted by the attacker. On the Security+ SY0-701 exam, this scenario tests your understanding of social engineering and email-based threats, often appearing as a multi-step question where the trap is choosing to reply to the email or click a link in it. The core concept is that out-of-band verification bypasses the attacker’s control, ensuring you confirm legitimacy through a separate, trusted channel before any financial loss occurs. Remember the mnemonic “BEC = Bypass Email, Call” to recall that the safest response is always to pick up the phone or use a verified portal.
SY0-701 Threats, Vulnerabilities, and Mitigations Practice Question
This SY0-701 practice question tests your understanding of threats, vulnerabilities, and mitigations. 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.
An accounts payable clerk receives an email that continues a real vendor conversation from last week. The sender domain is only one character different from the vendor's real address. The message says the invoice is overdue and asks the clerk to update the payment account before the end of the day. What is the best next action?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Verify the request using a known phone number or portal from previous records before taking action.
Option B is correct because the email exhibits classic signs of a business email compromise (BEC) attack: a spoofed sender domain (typosquatting) and urgent payment redirection. The best next action is to verify the request out-of-band using a trusted phone number or portal from previous records, as this bypasses any compromised email channels and confirms the legitimacy of the request before any financial loss occurs.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Reply to the email asking for confirmation of the new bank details.
Why it's wrong here
Replying through the same message chain still trusts the potentially spoofed sender and can expose more details.
- ✓
Verify the request using a known phone number or portal from previous records before taking action.
Why this is correct
Using a known out-of-band contact method confirms whether the request is legitimate without trusting the suspicious email path.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Forward the email to the vendor's entire contact list to warn them immediately.
Why it's wrong here
Broadcasting the message can spread the phishing attempt and may not preserve evidence for investigation.
- ✗
Open the attached invoice to check whether the payment information matches past records.
Why it's wrong here
Opening attachments from a suspicious message increases risk and does not validate the sender's identity.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think opening the attachment to check payment details is a safe verification step, but in reality, attachments in phishing emails are a common vector for malware delivery, and the correct action is always to verify through a trusted, independent channel.
Detailed technical explanation
How to think about this question
In a BEC attack, the attacker often uses domain spoofing with a lookalike domain (e.g., vend0r.com instead of vendor.com) or a similar display name to trick the recipient. The urgency in the message is a social engineering tactic to bypass rational verification. Out-of-band verification (e.g., calling a known phone number from a previous invoice) is the only reliable method to confirm the request, as it uses a separate communication channel not controlled by the attacker.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
What to study next
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FAQ
Questions learners often ask
What does this SY0-701 question test?
Threats, Vulnerabilities, and Mitigations — This question tests Threats, Vulnerabilities, and Mitigations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Verify the request using a known phone number or portal from previous records before taking action. — Option B is correct because the email exhibits classic signs of a business email compromise (BEC) attack: a spoofed sender domain (typosquatting) and urgent payment redirection. The best next action is to verify the request out-of-band using a trusted phone number or portal from previous records, as this bypasses any compromised email channels and confirms the legitimacy of the request before any financial loss occurs.
What should I do if I get this SY0-701 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Same concept, more angles
1 more ways this is tested on SY0-701
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. An accounts payable specialist receives a reply inside an existing vendor email thread. The message uses the real invoice number, matches the vendor's usual tone, and asks the specialist to change payment instructions to a new bank account before the end of the day. The vendor later confirms its mailbox was compromised. What type of attack is most likely?
hard- A.Spear phishing, because the attacker targeted one employee with a convincing message.
- ✓ B.Business email compromise through conversation hijacking, because the attacker used a compromised mailbox to alter a trusted thread.
- C.Baiting, because the attacker tried to tempt the user with urgency and financial pressure.
- D.Vishing, because the attacker is trying to persuade the user to change banking details.
Why B: This is a business email compromise (BEC) attack specifically using conversation hijacking. The attacker gained access to the vendor's legitimate email account and inserted a fraudulent reply into an existing, trusted email thread, leveraging the compromised mailbox to bypass the specialist's suspicion. This differs from standard spear phishing because the attacker did not craft a new email from a spoofed address but instead hijacked an ongoing, authenticated conversation.
Last reviewed: Jun 11, 2026
This SY0-701 practice question is part of Courseiva's free CompTIA 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 SY0-701 exam.
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