Skip to main content The company is feuding with a security researcher publicly posting vulnerabilities. The company is feuding with a security researcher publicly posting vulnerabilities. by May 30, 2026, 3:19 PM UTC Image: The Verge Terrence O'Brien is the Verge’s weekend editor. He has over 18 years of experience, including 10 years as managing editor at Engadget. Microsoft is facing criticism for its handling of zero-day exploits. Someone going by the name Nightmare Eclipse has been publicly feuding with the company, posting proof-of-concept exploit code. Some of their posts suggest that they’re a disgruntled former employee. But what caught cyber security researcher Kevin Beaumont’s eye was how Microsoft has responded . Microsoft suggests it plans to bring a criminal case against Nightmare Eclipse for failing to follow “proper coordination” in disclosing vulnerabilities. They also disabled Nightmare Eclipse’s GitHub, GitLab, and Microsoft Security Response Center accounts disabled .…