{"slug": "another-bug-hunter-leaks-microsoft-exploits-in-defiance-of-companys-handling-of", "title": "Another bug hunter leaks Microsoft exploits in defiance of company’s handling of vulnerability disclosures", "summary": "A security researcher has publicly released exploit code for multiple Microsoft vulnerabilities, bypassing the company's coordinated disclosure process. The move follows a similar action by another researcher known as Nightmare Eclipse, who leaked exploits earlier this year in protest of Microsoft's handling of bug reports. The leaks expose users to increased risk by providing attackers with working exploit code before Microsoft can issue patches.", "body_md": "**SPONSORED LINKS**\n\n### MOST POPULAR\n\n## EVENTS\n\n-\n### Overcoming the trade-offs in data sovereignty\n\nWhat does data sovereignty actually mean for your network, which trade-offs are unavoidable? Learn more.\n\n-\n### From Prompt to Exploit: How LLMs Are Changing API Attacks\n\nModern applications are API-driven, interconnected, and often over-permissioned, making them an ideal target for AI-assisted attacks.\n\n-\n### Architecting the Future: Unlocking Enterprise Data Services for Kubernetes\n\nJoin us to discover how to eliminate infrastructure silos and establish a standardized, enterprise-grade cloud-native platform.\n\n-\n### Catch the Advanced Attacks Microsoft 365 Misses with Behavioral AI Security\n\nMicrosoft 365 is the backbone of enterprise communication, and its native security filters out the known and the noisy.\n\n-\n### Virtual Cyber Recovery Sim\n\nStep into the chaos of a live ransomware breach, test your response skills, and team up with other IT and security pros to outsmart cybercriminals\n\n-\n### Virtual Cyber Recovery Simulation\n\nRansomware attacks aren’t slowing down, and neither are we. Druva’s hit event, Escape Ransomware, is now fully virtual.\n\n-\n### Agentic AI at Scale: From Pilot to Production\n\nJoin us to learn how to unlock real ROI by driving adoption of AI at scale.\n\n[AI](https://beta.theregister.com/tag/ai)\n\n-\nSecurity\n\n#### Another bug hunter leaks Microsoft exploits in defiance of company’s handling of vulnerability disclosures\n\nResearchers follow in Nightmare Eclipse’s footsteps, flipping off Redmond in favor of insta-leaks\n\n-\nOS platforms\n\n#### Microsoft Build: Surface RTX Spark Dev Box, Coreutils for Windows, air-gapped GitHub and more\n\nExecution Containers provide safe environment for running AI agents, while Windows Developer Config aims to make Windows less unpleasant for developers\n\n-\npublic sector\n\n#### Listen up, England. The Health Secretary is going to be data controller for everyone's Single Patient Record\n\nNo, public bucket policy doesn't mean everyone gets a bucket for themselves. Please let Tech do it. Don't go into Settings... NOOOOOO!\n\n-\nLegal\n\n#### Citation, please! UK regulator slaps Google with new publishing rules for search\n\nAction follows Chocolate Factory's changes to AI search results\n\n-\nSecurity\n\n#### UK banks offered access to OpenAI’s GPT-5.5 amid exclusion from Anthropic’s Glasswing expansion\n\n150 new organizations inducted to cyber’s Soho House, including the first outside the US\n\n[Infosec](https://beta.theregister.com/security)\n\n-\nSecurity\n\n#### Another bug hunter leaks Microsoft exploits in defiance of company’s handling of vulnerability disclosures\n\nResearchers follow in Nightmare Eclipse’s footsteps, flipping off Redmond in favor of insta-leaks\n\n-\nOS platforms\n\n#### Microsoft Build: Surface RTX Spark Dev Box, Coreutils for Windows, air-gapped GitHub and more\n\nExecution Containers provide safe environment for running AI agents, while Windows Developer Config aims to make Windows less unpleasant for developers\n\n-\npublic sector\n\n#### Listen up, England. The Health Secretary is going to be data controller for everyone's Single Patient Record\n\nNo, public bucket policy doesn't mean everyone gets a bucket for themselves. Please let Tech do it. Don't go into Settings... NOOOOOO!\n\n-\nLegal\n\n#### Citation, please! UK regulator slaps Google with new publishing rules for search\n\nAction follows Chocolate Factory's changes to AI search results\n\n-\nSecurity\n\n#### UK banks offered access to OpenAI’s GPT-5.5 amid exclusion from Anthropic’s Glasswing expansion\n\n150 new organizations inducted to cyber’s Soho House, including the first outside the US\n\n[FOSS](https://beta.theregister.com/tag/FOSS)\n\n-\n#### Another bug hunter leaks Microsoft exploits in defiance of company’s handling of vulnerability disclosures\n\nResearchers follow in Nightmare Eclipse’s footsteps, flipping off Redmond in favor of insta-leaks\n\n-\n#### Microsoft Build: Surface RTX Spark Dev Box, Coreutils for Windows, air-gapped GitHub and more\n\nExecution Containers provide safe environment for running AI agents, while Windows Developer Config aims to make Windows less unpleasant for developers\n\n-\n#### Listen up, England. The Health Secretary is going to be data controller for everyone's Single Patient Record\n\nNo, public bucket policy doesn't mean everyone gets a bucket for themselves. Please let Tech do it. Don't go into Settings... NOOOOOO!\n\n-\n#### Citation, please! UK regulator slaps Google with new publishing rules for search\n\nAction follows Chocolate Factory's changes to AI search results\n\n-\n#### UK banks offered access to OpenAI’s GPT-5.5 amid exclusion from Anthropic’s Glasswing expansion\n\n150 new organizations inducted to cyber’s Soho House, including the first outside the US\n\n-\n#### ZTE and partners nurture global ICT talent through 2026 engineering capacity building program\n\nGlobal ICT experts gather in Shenzhen to master cutting-edge engineering practices and foster international collaboration", "url": "https://wpnews.pro/news/another-bug-hunter-leaks-microsoft-exploits-in-defiance-of-companys-handling-of", "canonical_source": "https://www.theregister.com/security/2026/06/03/another-bug-hunter-leaks-microsoft-exploits-in-defiance-of-companys-handling-of-vulnerability-disclosures/5250590", "published_at": "2026-06-03 14:30:00+00:00", "updated_at": "2026-06-03 14:42:14.057779+00:00", "lang": "en", "topics": ["ai-policy", "ai-ethics"], "entities": ["Microsoft"], "alternates": {"html": "https://wpnews.pro/news/another-bug-hunter-leaks-microsoft-exploits-in-defiance-of-companys-handling-of", "markdown": "https://wpnews.pro/news/another-bug-hunter-leaks-microsoft-exploits-in-defiance-of-companys-handling-of.md", "text": "https://wpnews.pro/news/another-bug-hunter-leaks-microsoft-exploits-in-defiance-of-companys-handling-of.txt", "jsonld": "https://wpnews.pro/news/another-bug-hunter-leaks-microsoft-exploits-in-defiance-of-companys-handling-of.jsonld"}}