OpSec

Bypass Fix, New Features and Other Changes

Bypass Fix

• Fixed a major key resolution protection bypass where servers could deliver mod detection key probes outside of anvil and sign screens. Key detection now simplified to cover all server network inbound packets for OpSec's key resolution interception. Informed by ExploitPreventer's recent patch by @NikOverflow.

New Features

• Added a simple integrity checker that detects if the mod has been tampered with by comparing checksum with official release, and displays a warning screen on startup if integrity checks fail. Could be easily circumvented but its designed to combat simple malware injections such as WeedHack.

• Added an in-game update checker in the config menu.

Other Changes

• Fabric API module channels and keys now use the whitelist system instead of the legacy hard-coded pattern based matching bypass list.
• Reset button now updates update screen state.
• Fixed URL redirect for mod download buttons on newer Minecraft versions.
• Improved one-time hint message with a slight delay and color change for better visibility.
• Config menu now preserves scroll position when clicking buttons which was an issues on older Minecraft versions.
• Translation keys are now properly cleared on language reload.
• Remove unnecessary require=0 and fallback methods from Mixins.
• Migrated HttpUtilMixin from Unsafe to OpenSesame.
• Added packet source identification to exploit detection logs
• General performance optimizations.

For Minecraft Fabric 1.21 to 26.1 Full Changelog: https://github.com/aurickk/OpSec/compare/V1.0.9.1...V1.1.0