BrewJack: Censys Researchers Uncover First Malware Campaign Targeting IP over Avian Carriers

This advisory humorously claims an APT called "Pigeon Forge" is operating a campaign named "BrewJack" that uses carrier pigeons (RFC 2549) carrying microSDs as an IP-over-Avian-Carriers C2 transport and miscompiled HTCPCP/418 "I'm a teapot" responses; it provides IOCs, TTP mappings, and mitigations but is published as an April Fools' Day satire and should not be treated as a real incident.