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OpSec

Minecraft mod for advanced client brand spoofing, tracking exploit protections, and other privacy focused features.

File Details
DownloadInstall

opsec-26.1-26.1.2+v1.1.3.jar

Byaurickk
  • R
  • Apr 20, 2026
  • 455.62 KB
  • 640
  • 26.1.2+2
  • Fabric

File Name

opsec-26.1-26.1.2+v1.1.3.jar

Supported Versions

  • 26.1.2
  • 26.1.1
  • 26.1

Curse Maven Snippet

Fabric

modImplementation "curse.maven:opsec-1519411:7953789"
Curse Maven does not yet support mods that have disabled 3rd party sharing

Learn more about Curse Maven

Fixes and Improvements

Fixes

  • Remove the chat signing fallback where where a malicious server could force OpSec to resend the user's last unsigned chat as signed.
  • Key resolution probes are now tagged at the packet codec level to patch https://github.com/aurickk/OpSec/issues/5. Special thanks to @zyrafaq for helping me debug this issue.

Changes

  • Removed the redundant Fabric networking API mixins.
  • Tightened server resource pack detection.
  • Added autismsexdefender to the incompatible mod list. It has numerous detection vector, bypass methods and conflicts with OpSec.

For Minecraft Fabric 1.21 to 26.1.2

Full Changelog: https://github.com/aurickk/OpSec/compare/V1.1.2...V1.1.3