ringcentral breach

The ringcentral breach tag on WindowsForum.com covers the July 2026 social-engineering incident that exposed contact data for roughly 1.6 million email addresses, along with names, phone numbers, and physical addresses. The leaked dataset was added to Have I Been Pwned, and RingCentral's security bulletin notes that unauthorized activity was stopped, a third-party forensic firm was brought in, and affected customers are being contacted directly. For Windows and Microsoft 365 administrators, the tag highlights how the leaked contact data can make voice phishing, or vishing, attacks more convincing, particularly against Entra environments. Discussions focus on the practical security implications for enterprise IT, including the need for heightened awareness and verification measures in response to this breach.