Email Threat Intelligence

How Compromised Third-Party Inboxes Put Your Business at Risk

October 09, 2026 / in Blog / by Zafar Khan, RPost CEO

Microsoft reveals 12k+ compromised inboxes across 10,000 orgs.

Rocky the Raptor here, RPost’s cybersecurity product evangelist. I've noticed something interesting about cybersecurity conversations. Nearly everyone believes their organization is reasonably secure. Maybe not perfectly secure, but certainly more secure than some of the suppliers, customers, law firms, consultants, and other third parties they communicate with every day. And that's probably true for many organizations.