Infinite.zip May 2026

"Infinite.zip"—often referred to in technical circles as a type of or decompression bomb (such as the famous 42.zip )—is a maliciously crafted archive file designed to crash, freeze, or overwhelm the storage capacity of any system that attempts to unpack it.

Systems should be configured to reject archives where the ratio of compressed-to-uncompressed size is suspiciously high. Infinite.zip

It relies on recursive compression —layers upon layers of nested ZIP files. A single file might contain 100 zip files, each containing 100 more, and so on. 2. How it Works (The Mechanics) "Infinite

Do not extract unknown or unexpectedly small zip files from untrusted sources. zip and recursive zip bombs ? 42.zip (2004) - Hacker News A single file might contain 100 zip files,

The ZIP algorithm can compress repetitive data (like a file filled entirely with zeros) extremely efficiently. A 10 GB file of zeros can be compressed into a few megabytes.

The most infamous example, 42.zip , is a 42-kilobyte file that, when fully extracted, expands to 4.5 petabytes (

A tiny compressed file (often only a few kilobytes or megabytes in size) that expands into a gargantuan amount of data (petabytes, exabytes, or "infinite" space) upon extraction.