This is what some the world’s largest banks of malware look like stacked as hard drives

Published: (May 13, 2026 at 02:12 PM EDT)
2 min read
Source: TechCrunch

Source: TechCrunch

Background

Malware research group vx‑underground, which claims to have the largest collection of malware source code, said in a post on X that its archive amounts to about 30 terabytes.

A reply by Bernardo Quintero, founder of VirusTotal, noted that the service has about 31 petabytes of malware samples contributed by users to date (a petabyte is roughly 1,000 times larger than a terabyte).

Both repositories are massive. Cybersecurity companies, AI researchers, and threat‑intelligence firms treat such collections as critical for training detection models and understanding how attacks evolve.

Estimating the size

To visualize how tall these data banks would be if stacked as hard drives, we assume the use of standard 3.5‑inch internal hard drives with a 1 TB capacity. These drives are 1 inch tall, which makes the calculation straightforward.

  • vx‑underground – 30 TB → 30 drives → 30 inches (≈ 2.5 feet).
  • VirusTotal – 31 PB → 31 744 drives → 2 645 feet.

Comparisons

StructureHeight
Burj Khalifa (world’s tallest building)2 722 ft
VirusTotal data stack2 645 ft
One World Trade Center1 792 ft
Eiffel Tower1 083 ft
Zack Whittaker (reporter)6 ft
vx‑underground data stack2.5 ft

By this logic, VirusTotal’s data would be roughly two‑and‑a‑half Eiffel Towers tall.

A screenshot featuring a stack of hard drives from left‑to‑right in descending order, starting with: Burj Khalifa (2,722 feet); VirusTotal (2,645 feet); One World Trade Center (1,792 feet); the Eiffel Tower (1,083 feet); Zack Whittaker, who is 6 feet tall; and vx‑underground’s malware repository is about 2.5 feet worth of hard drives.

Image credit: Zack Whittaker / TechCrunch

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