Microsoft Zero Day Quest 2026 — $2.3 Million Awarded for Vulnerability Research

Microsoft has concluded its Zero Day Quest 2026 hacking competition, awarding a record $2.3 million in bug bounties to security researchers who discovered and responsibly disclosed 43 previously unknown vulnerabilities across Microsoft’s cloud and AI infrastructure.

About Zero Day Quest

Zero Day Quest is Microsoft’s largest security research event, inviting elite hackers to find vulnerabilities in Microsoft’s highest-impact products including Azure, Microsoft 365, Windows, and increasingly, AI systems including Copilot and Azure OpenAI.

Top Awards

• $400,000 — Azure Kubernetes Service container escape (anonymous researcher, Germany)
• $250,000 — Azure OpenAI prompt injection leading to data exfiltration (researcher from Singapore)
• $200,000 — Windows Hyper-V guest-to-host escape (team from Netherlands)
• $150,000 — Microsoft 365 authentication bypass (researcher from India)
• $125,000 — Teams RCE via malicious meeting invite (Brazilian security team)

AI Security — The New Frontier

For the first time, Microsoft offered large bounties specifically for AI security research. The $250,000 Azure OpenAI award highlights how prompt injection and AI-specific attacks are now considered critical infrastructure vulnerabilities.

Types of AI Vulnerabilities Found

• Prompt injection attacks that bypass system prompts
• Data exfiltration via model outputs leaking training data
• Indirect prompt injection through RAG (Retrieval-Augmented Generation) systems
• Model inversion attacks recovering sensitive user conversations

How to Participate in Bug Bounty Programs

# Find programs on major platforms
# HackerOne: hackerone.com/microsoft
# Bugcrowd: bugcrowd.com/microsoft

# Microsoft specific scopes
# In-scope: Azure, M365, Windows, Xbox Live, Bing, Edge
# Highest payout: Azure cloud vulnerabilities, authentication bypasses

# Tools for cloud security research
pip install azure-cli
az login
az account list  # Enumerate accessible resources

# Check for misconfigured storage
az storage account list
az storage container list --account-name TARGET

Getting Started in Bug Bounty

• Start with lower-competition programs (smaller companies, newer platforms)
• Focus on one area: web apps, mobile, cloud, or AI
• Complete PortSwigger Web Security Academy (free) before starting
• Read disclosed reports on HackerOne — the best learning resource available
• Join CTF competitions to build skills in a legal environment

The SudoFlare Takeaway

$2.3 million in a single competition demonstrates how much the security industry has matured. The shift toward AI-specific bounties signals where the next decade of security research is heading. If you are a skilled security researcher, Microsoft, Google, and Apple are paying life-changing sums for the right vulnerabilities. Invest time in learning cloud and AI security — that is where the largest payouts are going.