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== Concerns == The theoretical maximum compression factor for a raw DEFLATE stream is about 1032 to one,<ref>{{cite web | title=zlib Technical Details | url=https://www.zlib.net/zlib_tech.html | access-date=10 July 2019}}</ref> but by exploiting the ZIP format in unintended ways, ZIP archives with compression ratios of billions to one can be constructed. These [[zip bomb]]s unzip to extremely large sizes, overwhelming the capacity of the computer they are decompressed on.<ref>{{cite news |last1=Smith |first1=Ernie |title=The Most Clever 'Zip Bomb' Ever Made Explodes a 46MB File to 4.5 Petabytes |url=https://www.vice.com/en/article/the-most-clever-zip-bomb-ever-made-explodes-a-46mb-file-to-45-petabytes/ |access-date=10 July 2019 |work=Motherboard |agency=[[Vice Media]] |date=10 July 2019}}</ref>
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