The hackage security library provides both server and client utilities for securing the Hackage package server (<http://hackage.haskell.org/>). It is based on The Update Framework (<http://theupdateframework.com/>), a set of recommendations developed by security researchers at various universities in the US as well as developers on the Tor project (<https://www.torproject.org/>). The current implementation supports only index signing, thereby enabling untrusted mirrors. It does not yet provide facilities for author package signing. The library has two main entry points: "Hackage.Security.Client" is the main entry point for clients (the typical example being @cabal@), and "Hackage.Security.Server" is the main entry point for servers (the typical example being @hackage-server@). This is a beta release.