312-39 Proactive Threat Detection Practice Question
In the context of proactive detection, which TWO of the following are effective methods for identifying 'Low and Slow' exfiltration attempts?
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
✓
Establishing a baseline for outbound traffic volumes and alerting on significant deviations
Identifying long-duration connections and baseline deviations in data volume are the most effective ways to spot slow exfiltration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Checking all outbound traffic against a whitelist of top 1000 websites
Why it's wrong here
Whitelisting is impractical in most enterprise environments.
- ✓
Establishing a baseline for outbound traffic volumes and alerting on significant deviations
Why this is correct
Slow exfiltration often goes unnoticed until the cumulative data volume exceeds the baseline.
- ✓
Monitoring for long-lived, low-bandwidth connections to external IPs
Why this is correct
Slow exfiltration often involves a continuous, low-volume stream of data.
- ✗
Scanning all outgoing emails for keywords
Why it's wrong here
Keyword scanning is insufficient for detecting data exfiltration via non-email channels.
- ✗
Blocking all encrypted traffic at the firewall
Why it's wrong here
Blocking encrypted traffic breaks most modern internet functionality.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official EC-Council exam blueprint
This 312-39 practice question is part of Courseiva's free EC-Council 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 312-39 exam.