We are closely tracking Microsoft’s emergency patch for previously unknown vulnerabilities in Exchange Server software and reports of potential compromises of U.S. think tanks and defense industrial base entities. We encourage network owners to patch ASAP: msrc-blog.microsoft.com/2021/03/02/mul…
And, this article offers specific measures beyond just patching to determine if your systems are already compromised: us-cert.cisa.gov/ncas/alerts/aa…
Love the leadership here — NSA tweeting about cybersecurity, sends a message about the importance and priority level of this.