Quick Answer
The answer is data exfiltration via the transaction log. This is correct because the transaction log records every write operation, and the sequence of LOP_BEGIN_XACT, LOP_INSERT_ROWS, and LOP_COMMIT_XACT on a table named ‘CreditCards’—especially when paired with a bulk insert operation—documents a deliberate, high-volume copy of sensitive data. In the context of the Computer Hacking Forensic Investigator CHFI exam, this scenario tests your ability to interpret SQL Server transaction log forensics as direct evidence of unauthorized data movement, not merely a routine backup or index rebuild. A common trap is confusing bulk insert with legitimate ETL processes, but the targeted table name and breach timing confirm malicious intent. Memory tip: think “Bulk + Sensitive Table = Exfiltration,” as bulk operations in logs near a breach are rarely innocent.
This CHFI practice question tests your understanding of application, email and cloud forensics. 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.
During a forensic investigation of a Microsoft SQL Server, you find the transaction log contains the following: LOP_BEGIN_XACT, LOP_INSERT_ROWS, LOP_COMMIT_XACT for a table named 'CreditCards', with a timestamp just before a known data breach. The log also shows a bulk insert operation. What does this indicate?
A scheduled backup
Why wrong: Backups typically use BACKUP commands, not INSERT.
Data exfiltration via the transaction log
The INSERT operations on a sensitive table, especially bulk, indicate data theft.
A SQL injection attack on the database
Why wrong: SQL injection might show SELECT statements or error responses, not bulk INSERT.
Normal database maintenance
Why wrong: Bulk insert into CreditCards is not normal maintenance.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Data exfiltration via the transaction log
A transaction log showing INSERT operations on a sensitive table, especially with bulk insert, is strong evidence of data exfiltration. The timing and table name suggest unauthorized copying of credit card data.
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.
A scheduled backup
Why it's wrong here
Backups typically use BACKUP commands, not INSERT.
Data exfiltration via the transaction log
Why this is correct
The INSERT operations on a sensitive table, especially bulk, indicate data theft.
Related concept
Read the scenario before looking for a memorised answer.
A SQL injection attack on the database
Why it's wrong here
SQL injection might show SELECT statements or error responses, not bulk INSERT.
Normal database maintenance
Why it's wrong here
Bulk insert into CreditCards is not normal maintenance.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
Backups typically use BACKUP commands, not INSERT.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CHFI exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which CHFI exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Application, Email and Cloud Forensics — This question tests Application, Email and Cloud Forensics — Read the scenario before looking for a memorised answer..
The correct answer is: Data exfiltration via the transaction log — A transaction log showing INSERT operations on a sensitive table, especially with bulk insert, is strong evidence of data exfiltration. The timing and table name suggest unauthorized copying of credit card data.
Identify which CHFI exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
About these practice questions
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Same concept, more angles
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. In database forensics, which type of log records every transaction (including INSERT, UPDATE, DELETE) and allows reconstruction of database changes over time?
easyWhy C: Transaction logs (also called redo logs) record all changes to the database, enabling point-in-time recovery and auditing of data modifications.
Variation 2. During a database forensic investigation, you need to review Microsoft SQL Server transaction logs to identify unauthorized data modifications. Which of the following SQL Server functions or commands is used to read the transaction log?
mediumWhy C: fn_dblog is an undocumented function that reads the SQL Server transaction log and returns log records. It is commonly used in forensic analysis.
Last reviewed: Jun 21, 2026
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