Microsoft’s enterprise ecosystem is represented by two distinct threat vectors this week: UNC6692’s active abuse of Microsoft Teams cross-tenant messaging as an initial access vector (SCC-CAM-2026-0233), and the Silk Typhoon/Xu Zewei extradition case (SCC-TAC-2026-0010) resurfaces documented MSS exploitation of Microsoft Exchange Server zero-days across a 2020-2021 campaign period. Neither item involves a new CVE, but both represent active or historically active exploitation paths that remain relevant for organizations running on-premises Exchange or misconfigured Teams external access policies.