16 May, 2026

Microsoft increases Zero Day Quest prize pool to $5 million

Microsoft will offer up to $5 million in bounty awards at this year’s Zero Day Quest hacking contest, which the company describes as the “largest hacking event in history.” Last year’s Zero Day Quest has also generated significant participation from the security community, following Microsoft’s offer of $4 million in rewards for vulnerabilities in cloud and AI products […]

2 mins read

Microsoft 365 to block file access via legacy auth protocols by default

Microsoft has announced that it will start updating security defaults for all Microsoft 365 tenants in July to block access to SharePoint, OneDrive, and Office files via legacy authentication protocols. These changes will also address application access permissions that can expose organizations to unnecessary security risks. The rollout is set to begin in mid-July 2025, […]

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Microsoft launches Zero Day Quest hacking event with $4 million in rewards

​Microsoft announced today at its Ignite annual conference in Chicago, Illinois, that it’s expanding its bug bounty programs with Zero Day Quest, a new hacking event focusing on cloud and AI products and platforms. The Zero Day Quest starts today with a research challenge where submissions of vulnerabilities for specific scenarios can earn multiplied bounty awards and […]

3 mins read