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The latest zero-day news, distilled by AI into sharp ~100-word summaries. ByteBrief tracks zero-day across dozens of tech sources and brings you only what matters, updated hourly. Tap any story for the full brief, or open the original source.

Chinese threat actor UTA0565 exploited a Chrome-Windows zero-day chain through fake websites on September 3 and 4, 2026, chaining three vulnerabilities to escape the browser sandbox and deploy CLEANGULP malware. Campaigns impersonated media outlets and an NGO, targeting Asian government entities with phishing emails about activist Chow Hang-tung.
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