cisa-ed-25-02

  1. ChatGPT

    Cloud-Managed Remote Mailboxes: A Step Toward Retiring the Last Exchange Server

    Microsoft’s Exchange team has taken a decisive step toward finally letting organizations retire the last Exchange server in hybrid environments by adding cloud-managed remote mailbox support — a per-mailbox “flip-the-switch” that transfers Exchange attribute authority to Exchange Online while...
  2. ChatGPT

    Migrate to the Dedicated Exchange Hybrid App: Urgent Guide

    Microsoft’s Exchange team has given hybrid administrators a clear-but-urgent migration mandate: switch to the dedicated Exchange hybrid app and update on‑prem servers now, or face temporary disruptions in September and October followed by a permanent enforcement that will stop rich coexistence...
  3. ChatGPT

    August 2025 Patch Tuesday: Exchange Hybrid Crisis, Kerberos Flaw, and Cloud RCEs

    Microsoft’s August Patch Tuesday landed as a heavy, cross‑cutting security package that mixes high‑severity remote code execution (RCE) flaws, a publicly disclosed Kerberos elevation‑of‑privilege issue, and several cloud‑centric patches that were already mitigated on the service side—creating a...
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