- A
The pattern is consistent with a password spraying attack.
One failed attempt across many accounts from one source fits password spraying, which avoids lockouts by keeping per-account attempts low.
- B
The attacker is performing a brute-force attack against one account.
Why wrong: Brute force would usually hammer a single account repeatedly rather than spreading one attempt across many different users.
- C
The activity is most likely credential stuffing with multiple known password pairs.
Why wrong: Credential stuffing usually reuses leaked credential sets and often produces scattered successful logins across many accounts, not one attempt each.
- D
The successful account is likely compromised and being used for persistence or mailbox abuse.
A forwarding rule plus bulk message access strongly indicates the account was taken over and is now being used to maintain access or exfiltrate data.
- E
The events primarily indicate a denial-of-service attack against the mail system.
Why wrong: The logs show authentication abuse and post-login activity, not traffic volume intended to exhaust service resources.
Quick Answer
The correct answer is that the successful account is likely compromised and being used for persistence or mailbox abuse. This conclusion is supported because the SIEM pattern shows a single public IP attempting one failed password against 53 different accounts over 25 minutes, which is the classic signature of a password spraying attack—a low-and-slow technique designed to evade account lockout thresholds by never hitting the same account twice. The subsequent successful login, creation of an inbox forwarding rule, and bulk message download confirm the attacker exploited a weak password and is now establishing persistence for data exfiltration. On the Security+ SY0-701 exam, this scenario tests your ability to distinguish password spraying from brute force or credential stuffing; a common trap is assuming multiple failures on one account indicate a brute force attack. Remember the mnemonic “One spray, one try, then mailbox spy” to recall that password spraying uses one attempt per account, followed by post-compromise abuse.
SY0-701 Security Operations Practice Question
This SY0-701 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 SIEM report shows this sequence over 25 minutes: the same public IP submitted one failed password attempt against 53 different accounts, then one account successfully authenticated, created an inbox forwarding rule, and downloaded hundreds of messages through the web portal. Which two conclusions are best supported? Select two.
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
The pattern is consistent with a password spraying attack.
Option A is correct because the SIEM shows a single public IP attempting one failed password against 53 different accounts over 25 minutes. This pattern—low-and-slow, one attempt per account—is the hallmark of a password spraying attack, which avoids account lockout thresholds by never hitting the same account repeatedly. The subsequent successful authentication and mailbox abuse confirm the attacker found a weak password for one account.
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.
- ✓
The pattern is consistent with a password spraying attack.
Why this is correct
One failed attempt across many accounts from one source fits password spraying, which avoids lockouts by keeping per-account attempts low.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The attacker is performing a brute-force attack against one account.
Why it's wrong here
Brute force would usually hammer a single account repeatedly rather than spreading one attempt across many different users.
- ✗
The activity is most likely credential stuffing with multiple known password pairs.
Why it's wrong here
Credential stuffing usually reuses leaked credential sets and often produces scattered successful logins across many accounts, not one attempt each.
- ✓
The successful account is likely compromised and being used for persistence or mailbox abuse.
Why this is correct
A forwarding rule plus bulk message access strongly indicates the account was taken over and is now being used to maintain access or exfiltrate data.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The events primarily indicate a denial-of-service attack against the mail system.
Why it's wrong here
The logs show authentication abuse and post-login activity, not traffic volume intended to exhaust service resources.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing password spraying (one password, many accounts) with brute-force (many passwords, one account) or credential stuffing (many known pairs), leading candidates to pick B or C despite the single-IP, single-attempt-per-account pattern.
Trap categories for this question
Command / output trap
The logs show authentication abuse and post-login activity, not traffic volume intended to exhaust service resources.
Detailed technical explanation
How to think about this question
Password spraying exploits the common use of weak passwords (e.g., 'Spring2024') across many accounts. The attacker typically uses automated tools to iterate through usernames, sending one authentication request per account per cycle, often over HTTP/HTTPS to an OWA or Exchange Web Services endpoint. Once inside, creating an inbox forwarding rule (via Set-Mailbox or ECP) allows persistent exfiltration, as all future emails are silently forwarded to an external address, bypassing typical DLP controls.
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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SY0-701 question test?
Security Operations — This question tests Security Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The pattern is consistent with a password spraying attack. — Option A is correct because the SIEM shows a single public IP attempting one failed password against 53 different accounts over 25 minutes. This pattern—low-and-slow, one attempt per account—is the hallmark of a password spraying attack, which avoids account lockout thresholds by never hitting the same account repeatedly. The subsequent successful authentication and mailbox abuse confirm the attacker found a weak password for one account.
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.
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Last reviewed: Jun 11, 2026
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