 A zip bomb is usually a small file for ease of transport and to avoid suspicion.However, when the file is unpacked, its contents are more than the system can handle.One example of a zip bomb is the file "42.zip", which is a zip file consisting of 42 kilobytes of compressed data, containing five layers of nested zip files in sets of 16, each bottom layer archive containing a 4.3-gigabyte (4 294 967 295 bytes; ~ 3.99 GiB) file for a total of 4.5 petabytes (4 503 599 626 321 920 bytes; ~ 3.99 PiB) of uncompressed data.