Certified Information Privacy Professional – Asia (CIPP/A) — Question 45

Which method ensures the greatest security when erasing data that is no longer needed, according to the Hong Kong Office of the Privacy Commissioner?

Answer options

• A. Strip-shredding paper copies of data.
• B. Crosscut shredding paper copies of data.
• C. Deleting electronic files containing data.
• D. Reformatting USB memory devices containing data.

Correct answer: B

Explanation

Crosscut shredding paper copies of data (Option B) is the most secure method because it cuts the paper into small, confetti-like pieces, making it nearly impossible to reconstruct the original documents. In contrast, strip-shredding (Option A) leaves longer strips that could potentially be reassembled. Deleting electronic files (Option C) may not remove data completely, and reformatting USB devices (Option D) can often be reversed, leaving data vulnerable.