Report to 3proxy@3proxy.org or via GitHub security reporting

For High/Critical patched version is released within 2 weeks

Release binaries are published with SHA256 checksums, an OpenPGP signature and a GitHub build provenance attestation.

The release signing key is 3proxy-release-key.asc in the root of this repository, an RSA-4096 key:

pub   rsa4096 2026-08-21 [SC]
      FC12 2144 99FC C7BA 1CFF  6CDC 0312 384E 3A73 940B
uid   3proxy release signing <3proxy@3proxy.org>

Import it once:

gpg --import 3proxy-release-key.asc

Checksums and the checksum file signature:

gpg --verify SHA256SUMS-x86_64.asc SHA256SUMS-x86_64
sha256sum -c SHA256SUMS-x86_64

RPM packages are signed, the signature is checked by rpm itself:

sudo rpm --import 3proxy-release-key.asc
rpm -K 3proxy-0.9.9.x86_64.rpm

DEB packages are published with a detached signature:

gpg --verify 3proxy-0.9.9.x86_64.deb.asc 3proxy-0.9.9.x86_64.deb

Build provenance (which workflow, commit and runner produced the file) is verified with the GitHub CLI:

gh attestation verify 3proxy-0.9.9.x86_64.rpm --owner 3proxy
gh attestation verify oci://docker.io/3proxy/3proxy:latest --owner 3proxy

Windows binaries are Authenticode signed in addition to the above.