Privacy engineering
Official release ·
v2.0.0
NullTrace is a client-side Fabric mod that reduces the information Minecraft servers can use to identify, fingerprint, or track a modded client. It started from OpSec's client-side privacy work and now runs its own codebase, branding, and version support for Minecraft 1.21.11, 26.1, 26.2, and 26.3.
NullTrace does not make you anonymous. It does not hide your IP address, server-side activity, or every fingerprinting technique. It is specifically focused on reducing common client-side fingerprinting and tracking surfaces.
First official release is now available through GitLab Releases and CurseForge. The v2.0.0 release includes builds for Minecraft 1.21.11, 26.1, 26.2, and 26.3.
NullTrace focuses on specific client-side signals instead of promising anonymity it cannot provide.
Connection posture and known fingerprinting surfaces are evaluated when joining a server, before normal play produces additional client signals.
Brand reporting, network channels, known packs, key resolution, telemetry, and selected resource-pack behavior can be filtered or isolated.
Alerts, logs, configuration screens, and optional diagnostics make active protections understandable rather than silently changing behavior.
Settings can be adjusted for a server instead of forcing one global policy onto every connection.
Keep potentially identifying behavior behind an explicit user action. This is the most deliberate option for unfamiliar servers.
Prompt when a protected action needs a decision, providing context without permanently blocking the workflow.
Apply the selected protection automatically for users who prefer a consistent default posture.
Allow trusted mods or known services to communicate intentionally while retaining protections for everything else.
Servers still receive an IP address and can observe account identity, movement, chat, timing, and server-side behavior. NullTrace narrows selected fingerprinting surfaces; it does not erase the connection.
