- A
Password spraying against multiple accounts with a shared password guess.
This pattern matches password spraying because the attacker tries one common password across many usernames to avoid lockouts and reduce noisy failures. The same source IP, low failure count per account, and eventual success on one account are classic clues. Analysts should treat the successful login as potentially compromised and review related authentication, MFA, and session activity immediately.
- B
A brute-force attack focused on a single account with repeated rapid guesses.
Why wrong: Brute force usually concentrates on one username and produces many failures for that same account rather than spreading attempts across many users.
- C
A replay attack using captured authentication traffic from a previous session.
Why wrong: Replay attacks reuse intercepted credentials or tokens, which typically would not appear as many fresh failed password attempts across different accounts.
- D
Credential stuffing using known breached username and password pairs.
Why wrong: Credential stuffing usually uses previously leaked valid pairs, while this scenario shows one repeated password being tested across many usernames.
Quick Answer
The answer is a password spraying attack against multiple accounts with a shared password guess. This is correct because the SIEM logs reveal a single source IP attempting authentication with the same password across 56 different usernames over a short window, which is the technical hallmark of password spraying—attackers deliberately use one common password to evade account lockout thresholds that trigger after multiple failed attempts on a single account. The subsequent successful login from that same IP, without any password-reset event, confirms the guessed password was valid for one account, making credential theft the likely outcome. On the Security+ SY0-701 exam, this scenario tests your ability to distinguish password spraying from brute force or credential stuffing; the trap is assuming many failed logins mean a brute force attack, but the key clue is the single password used across many usernames. Memory tip: think “one password, many users” to recall password spraying.
SY0-701 Security Operations Practice Question
This SY0-701 practice question tests your understanding of security operations. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 correlates VPN logs and sees the same public IP make one failed login attempt against 56 different user accounts over 25 minutes. The usernames vary, but the password value appears to be the same in each attempt. Ten minutes later, one of those accounts authenticates successfully from the same IP, and no password-reset events are recorded. Which attack pattern is most likely?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
Password spraying against multiple accounts with a shared password guess.
The SIEM logs show the same public IP attempting to authenticate with 56 different usernames using the same password. This is the hallmark of a password spraying attack, where an attacker tries a single common password against many accounts to avoid account lockout policies. The subsequent successful authentication from the same IP, without a password reset, confirms the guessed password was valid 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.
- ✓
Password spraying against multiple accounts with a shared password guess.
Why this is correct
This pattern matches password spraying because the attacker tries one common password across many usernames to avoid lockouts and reduce noisy failures. The same source IP, low failure count per account, and eventual success on one account are classic clues. Analysts should treat the successful login as potentially compromised and review related authentication, MFA, and session activity immediately.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
A brute-force attack focused on a single account with repeated rapid guesses.
Why it's wrong here
Brute force usually concentrates on one username and produces many failures for that same account rather than spreading attempts across many users.
- ✗
A replay attack using captured authentication traffic from a previous session.
Why it's wrong here
Replay attacks reuse intercepted credentials or tokens, which typically would not appear as many fresh failed password attempts across different accounts.
- ✗
Credential stuffing using known breached username and password pairs.
Why it's wrong here
Credential stuffing usually uses previously leaked valid pairs, while this scenario shows one repeated password being tested across many usernames.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse password spraying with brute-force attacks, failing to recognize that the key differentiator is the single password used against multiple accounts versus multiple passwords against a single account.
Trap categories for this question
Command / output trap
Credential stuffing usually uses previously leaked valid pairs, while this scenario shows one repeated password being tested across many usernames.
Scenario analysis trap
Credential stuffing usually uses previously leaked valid pairs, while this scenario shows one repeated password being tested across many usernames.
Detailed technical explanation
How to think about this question
Password spraying exploits the fact that many organizations configure account lockout after a small number of failed attempts (e.g., 5–10) per user. By spreading one guess across many accounts, the attacker stays below the lockout threshold. The SIEM correlation over 25 minutes indicates a slow, deliberate spray rate, often automated with tools like Hydra or custom scripts, and the successful login suggests the password was a common weak value (e.g., 'Password123').
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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: Password spraying against multiple accounts with a shared password guess. — The SIEM logs show the same public IP attempting to authenticate with 56 different usernames using the same password. This is the hallmark of a password spraying attack, where an attacker tries a single common password against many accounts to avoid account lockout policies. The subsequent successful authentication from the same IP, without a password reset, confirms the guessed password was valid 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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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