Here is a deep report on its mechanics, purpose, and mitigation: 1. What is it?
Modern antivirus software and archiving tools (like 7-Zip) often limit the number of nested levels they will scan or extract to avoid this type of attack. Infinite.zip
The most infamous example, 42.zip , is a 42-kilobyte file that, when fully extracted, expands to 4.5 petabytes ( Here is a deep report on its mechanics,
"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. The most infamous example, 42
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)
Its primary purpose is to exhaust disk space (filling up the server's hard drive) or cause high CPU utilization, resulting in system failure.
When an antivirus scanner or user unzips the file, the decompression engine attempts to expand every layer, leading to an exponential increase in disk space usage. 3. Purpose and Impact