Firefox Leverages AI for Security Hardening; Google TAG Reports 90 Zero-Days Exploited

Firefox Enhances Security with Anthropic AI Red Team Collaboration

• Mozilla partnered with Anthropic to utilize their AI models, including Claude, for red-teaming Firefox and identifying new security vulnerabilities.
• This collaboration is a strategic move to proactively find and fix bugs faster, particularly in critical areas like memory safety within the browser's JavaScript engine and rendering components.
• The initiative aims to improve Firefox's overall resilience against sophisticated attacks by developing new detection capabilities and tooling for security researchers.

Source: Mozilla Blog | Date: March 6, 2026

Firefox Continues to Tackle Memory Corruption Bugs Despite AI Bug Hunting Efforts

• Despite the advanced AI-driven bug hunting partnership with Anthropic, Firefox continues to face ongoing challenges with memory corruption bugs.
• Memory corruption flaws remain a persistent source of critical vulnerabilities in the browser, highlighting the complexity of eliminating these types of issues.
• The collaboration with AI red teams is a testament to Mozilla's commitment to enhancing security, but it also underscores the continuous nature of browser hardening against sophisticated threats.

Source: The Register | Date: March 6, 2026

Google TAG Reports 90 Zero-Day Exploits in 2025, Shifting Focus to Enterprise Targets

• Google's Threat Analysis Group (TAG) disclosed that a record 90 zero-day vulnerabilities were actively exploited in 2025, indicating a significant increase in sophisticated attacks.
• The report highlights a growing trend where enterprise organizations are increasingly becoming primary targets for these advanced zero-day campaigns, rather than solely consumers.
• A substantial portion of these zero-day flaws affected browsers and their underlying components, underscoring the critical need for rapid patching and robust defense-in-depth strategies for all users.

Source: Security Affairs | Date: March 5, 2026

References

1. Hardening Firefox with Anthropic’s Red Team - Mozilla Blog
2. Firefox taps Anthropic AI bug hunter, but rancid RAM still flipping bits - The Register
3. Google GTIG: 90 zero-day flaws exploited in 2025 as enterprise targets grow - Security Affairs