Calypso / Red Lamassu (Bronze Medley, China-aligned) — Showboat and JFMBackdoor against telecoms

Lumen Black Lotus Labs and PwC disclosed two purpose-built implants — Showboat (Linux) and JFMBackdoor (Windows) — used by Calypso against international telecom firms (daily 2026-05-22). See § 4 for the broader telecom-sector pressure this week; the operator-level point is the dedicated Linux/Windows implant pair, indicating long-haul access intent against carrier infrastructure rather than smash-and-grab.