Progress orders emergency ShareFile server shutdown over mystery security threat

Progress Software has instructed customers to immediately power off on‑premises ShareFile Storage Zone Controller Windows servers after detecting a "credible external security threat" targeting that component; the company says there is no evidence of unauthorized access but has disabled cloud access and urges Storage Zone Controllers remain offline while it investigates, with outside speculation pointing to a possible unauthenticated RCE and context from recent ShareFile/MOVEit vulnerabilities and incidents.