Glimmer
Hello, my name is Orca: Unprivileged Keylogging on Wayland via D-Bus Accessibility
2026-05-15
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Keith Linneman
KDE KWin and GNOME Mutter trust a claimable Orca D-Bus name for raw Wayland accessibility keyboard events, including password input.
Purple Team Engineering: Detection Below the Socket Layer with eBPF and Tetragon
2026-04-24
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Keith Linneman
Creating Tetragon policies to catch malware - AF_INET raw sockets, AF_PACKET with manual Ethernet construction, and the combination-detection patterns that emerge. Working Tetragon policy additions, a custom event parser, and purple-team test binaries to verify detection coverage.
Purple Team Engineering: Covert Channels and the DNF Numbers Station
2026-04-13
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Keith Linneman
Building a C2 channel indistinguishable from package manager traffic, encoding tasking in Apache ETag microseconds, and surveying the surprising state of repository security on Fedora.
Purple Team Engineering: Building and Detecting a Rust C2 Beacon
2026-04-09
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Keith Linneman
Building an offensive tool and the detection rules to catch it. The architecture behind Glimmer's dual-layer encryption, binary hardening from 1.4MB to 388K, and real-time YARA detection through Wazuh.