This has been superseded by Patcher.
Resource Exploit Fix fixes a security exploit in Minecraft 1.8
This exploit allows the server to check if you have a file on your computer, and wasn't fixed until 1.9.
Click on a Minecraft version below in order to download the mod and place the file in your mods directory
Resource Exploit Fix 2.0 for Minecraft 1.8.9
2.0 is a rewrite of the original mod, using ASM instead of Mixins, reducing the file size to 10kb and bringing compatibility with other mods.
Fixed version id detection for our mod installer Fixed possible incompatibility with other mixin mods
Fixes security exploits in 1.8.x preventing malicious servers from checking if files exist on a player's computer.
More info: https://ungeek.eu/minecraft-18-file-access/